someone please help?

Answer:

7

Step-by-step explanation:

The left hand limit is when we approach zero from left. We use the function on this domain in finding the limit.

[tex]\lim_{x \to 0^-} f(x)=7-x^2[/tex]

[tex]\lim_{x \to 0^-} f(x)=7-(0)^2=7[/tex]

The right hand limit is

[tex]\lim_{x \to 0^+} f(x)=10x+7[/tex]

[tex]\lim_{x \to 0^+} f(x)=10(0)+7=7[/tex]

Since the left hand limit equals the right hand limit;

[tex]\lim_{x \to 0} f(x)=7[/tex]

Check the picture below.

[tex]\bf \stackrel{\textit{area of triangles on the left}}{2\left[\cfrac{1}{2}(2)(3) \right]}+\stackrel{\textit{area of triangles on the right}}{2\left[\cfrac{1}{2}(4)(3) \right]}\implies 6+12\implies 18[/tex]

Answer: x=15/8

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

1/2 x+(3/2)(x)+ (3/2)(1) + −1/4 =5(Distribute)

Then, Combine like terms:

(1/2x + 3/2x) +(3/2 + −1/4) =5(Combine Like Terms)

Which you will get : 2x+ 5/4 =5

Step 2: Subtract 5/4 from both sides.

2x+ 5/4 − 5/4 =5− 5/4

2x= 15/4

Step 3: Divide both sides by 2.

[tex]\frac{2x}{2}  = \frac{15/4}{2}[/tex]

x = 15/8 ← Answer

* Hopefully this helps: ) Mark me the brainliest:)!!

~ 234483279c20~

1680 is the PERMUTATION answer.

Find the vertex: -4x^2 + 16x - 7​

Vertex = ( x, f(x)).

x = -b/2a

x = -16/2(-4)

x = -16/-8

x = 2

f(x) = -4x^2 + 16x - 7

Let x = 2

f(2) = -4(2)^2 + 16(2) - 7

f(2) = -4(4) + 32 - 7

f(2) = -16 + 32 - 7

f(2) = 16 - 7

f(2) = 9

Vertex = (2, 9)

B answer choice is always b

Answer:

  B. Maximum.

Explanation:

  The basic speed rules require drivers to adjust speed to the conditions. The Night speed limits usually begin 30 minutes after sunset and 30 minutes before sunrise. They are used for sectors in which the safety problems require a speed lower than the self-selected by drivers.

  I hope this answer helps you.

Answer:

120 cm^2

Step-by-step explanation:

Area of trapezoid = [tex]\frac{1}{2} (a + b) h[/tex]

a - 6

b - 10

h - 15

[tex]\frac{1}{2} (6+10)15[/tex]

[tex]\frac{1}{2} (16)15[/tex]

[tex]\frac{1}{2} * 240[/tex][tex]\frac{240}{2}[/tex]

= 120 cm ^2

Answer: 120cm

Step-by-step explanation:

in e2020 its thanx for the answer mark me the brailiest pleaseeee;)

Answer:

Step-by-step explanation:

y = 2*3^x

x = 1

y = ?

y = 2*3^1

y =2 * 3

y = 6

The answer is the first graph.

Answer:

V = 1138.77333333 cm^3

Step-by-step explanation:

The volume of a cone is given by

V = 1/3 pi r^2 h

We know the diameter so we can find the radius

d = 16

r = d/2

  = 16/2 =8

The radius is 8

V = 1/3 pi (8)^2 * 17

V = 1088/3 *pi

Using 3.14 for pi

V = 1138.77333333 cm^3

Answer:

B) 7 cans

Step-by-step explanation:

First task is to determine how many square units we have.

With the rectangle spanning 2 units on the X-axis and 3 unites on the Y-axis, we know that it has an area of 6 square units.

The two triangle shapes sum up to one unit total, since a triangle's area is (base * height) / 2.  Both have a base of 1 unit, and a height of 1 unit... so  (1 * 1) / 2  = 1/2 for each triangle.  Together, they occupy 1 unit.

So, total is 7 square units. Let's imagine it as a 7-unit by 1-unit rectangle, it will be easier to calculate.  Each unit is 5 feet.  So, this rectangle measures 35 (7 * 5) feet long, by 5 (1 * 5) feet wide... for a total of 175 (35 * 5) sq feet.

Since a can of paint can cover 25 sq feet, he'll need 7 cans (175 / 25).

Answer:

[tex]4.5\ yd[/tex]

Step-by-step explanation:

step 1

we know that

Jeremy uses 27 inches of board for each birdhouse

so

by proportion

Calculate how  many inches of board does he need to make 6 birdhouses

[tex]\frac{27}{1}\frac{in}{birdhouses}=\frac{x}{6}\frac{in}{birdhouses} \\ \\x=6*27\\ \\x=162\ in[/tex]

step 2

Convert inches to yards

[tex]1\ yd =36\ in[/tex]

[tex]162\ in=162/36=4.5\ yd[/tex]

Answer:

Answer:

4y

Step-by-step explanation:

step 1

we know that

Jeremy uses 27 inches of board for each birdhouse

so

by proportion

Calculate how  many inches of board does he need to make 6 birdhouses

step 2

Convert inches to yards

Step-by-step explanation:

Answer:

Step-by-step explanation:

The angle at E is 90 degrees.

All tangents of a circle always meet the radius at a 90 degree angle.

90 + 67 + G = 180o    All triangles have 180 degrees. Combine left.

157 + G = 180o           Subtract 157 from both sides.

157 - 157 + G + 180 - 157

G = 23

Answer: 34 more pouches

7 boxes - fish food; 1 box contained 6 pouches

Total amount of fish food is 7 × 6 = 42 pouches of fish food

2 packets - cat food; 1 packet contained 4 pouches

Total amount of cat food is 2 × 4 = 8 pouches

How many more pouches of fish food than cat food did Shelly buy?

42 pouches - 8 pouches = 34 pouches

Therefore there was 34 more pouches of fish food than cat food

Answer:

[tex]\large\boxed{\begin{array}{c|c|c|c}Length:&4cm&2cm&8cm\\Width:&6cm&12cm&3cm\\Height:&9cm&9cm&9cm\end{array}}[/tex]

Step-by-step explanation:

The formula of a volume of a cube with side length a:

[tex]V=a^3[/tex]

We have a = 6cm. Substitute:

[tex]V=6^3=216\ cm^3[/tex]

[tex]\begin{array}{c|c}216&2\\108&2\\54&2\\27&3\\9&3\\3&3\\1\end{array}[/tex]

[tex]216=2\cdot2\cdot2\cdot3\cdot3\cdot3=(2\cdot2)\cdot(2\cdot3)\cdot(3\cdot3)=4\cdot6\cdot9\\\\216=2\cdot2\cdot2\cdot3\cdot3\cdot3=2\cdot(2\cdot2\cdot3)\cdot(3\cdot3)=2\cdot12\cdot9\\\\216=2\cdot2\cdot2\cdot3\cdot3\cdot3=(2\cdot2\cdot2)\cdot3\cdot(3\cdot3)=8\cdot3\cdot9\\\vdots[/tex]

Answer:

[tex]\large\boxed{\dfrac{3}{4}<0.80}[/tex]

Step-by-step explanation:

[tex]\dfrac{3}{4}=0.75\\\\\text{therefore}\\\\\dfrac{3}{4}<0.89\ \text{is}\ \bold{TRUE}\\\\\dfrac{3}{4}>0.80\ \text{is}\ \bold{FALSE}\\\\\dfrac{7}{15}<\dfrac{1}{2}=0.50\ \text{because}\ \dfrac{7.5}{15}=\dfrac{1}{2}.\ \text{Therefore}\ \dfrac{7}{15}>0.50\ \text{is}\ \bold{FALSE}\\\\\dfrac{5}{7}>\dfrac{1}2{=0.50\ \text{because}\ \dfrac{3.5}{7}=\dfrac{1}{2}.\ \text{Therefore}\ 0.50>\dfrac{5}{7}\ \text{is}\ \bold{FALSE}[/tex]

A is the answer to this question

brainiest

Answer:

Step-by-step explanation:

Look at the picture.

ΔABC and ΔDBE are similar.Therefore the corresponding sides are in proportion:

[tex]\dfrac{DE}{AC}=\dfrac{DB}{AB}[/tex]

We have

[tex]DE=x,\ AC=36,\ DB=y,\ AB=y+y=2y[/tex]

Substitute:

[tex]\dfrac{x}{36}=\dfrac{y}{2y}[/tex]             cancel y

[tex]\dfrac{x}{36}=\dfrac{1}{2}[/tex]           cross multiply

[tex]2x=36[/tex]             divide both sides by 2

[tex]x=18[/tex]

Answer:

[tex]3a\times 3a\times 3a[/tex]

Step-by-step explanation:

The given expression is;

[tex](3a)^3[/tex]

Recall that;

[tex]a^m=a\times a\times \times a....[/tex] m-times.

In [tex](3a)^3[/tex] means

[tex]3a\times 3a\times 3a[/tex]

The correct choice is the third option

Answer:

3a x 3a x 3a

Step-by-step explanation:

Answer:

8 years old

Step-by-step explanation:

46 - 14 = 32 inches of growth

32 inches / 4 inches = 8 years

Answer:

The correct answer would be H

Step-by-step explanation:

H

MSN’s MSN’s

Dnnsnsjsjs

Sjsjkssj

Answer:

15. 6 ft

Step-by-step explanation:

Your calculation is correct

note h = 15.6 ft ( to the nearest tenth of a foot )

Yes,your calculation is correct

I’m assuming you’re saying with an exponent. 7x^2+5

Answer:

7x^2+5

Step-by-step explanation:

This relation is a function because a function [tex]f[/tex] from a set [tex]A[/tex] to a set [tex]B[/tex] is a relation that assigns to each element [tex]x[/tex] in the set [tex]A[/tex] exactly one element [tex]y[/tex] in the set [tex]B[/tex]. The set [tex]A[/tex] is the domain (also called the set of inputs) of the function and the set [tex]B[/tex] contains the range (also called the set of outputs). So we have that:

[tex]\left[\begin{array}{cc}x & y\\4 & 5\\8 & 7\\12 & 9\\16 & 11\end{array}\right][/tex]

All these points have been plotted below, so you can realize this is a linear function. Therefore, with two points we can get the equation, so:

[tex]The \ equation \ of \ the \ line \ with \ slope \ m \\ passing \ through \ the \ point \ (x_{1},y_{1}) \ is:\\ \\ y-y_{1}=m(x-x_{1}) \\ \\ \\ y-5=\frac{7-5}{8-4}(x-4) \\ \\ y-5=\frac{2}{4}(x-4) \\ \\ y=\frac{1}{2}x+5-2 \\ \\ y=\frac{1}{2}x+3 \\ \\ \\ Where: \\ \\ (x_{1},y_{1})=(4,5) \\ \\ (x_{2},y_{2})=(8,7)[/tex]

Finally, the equation is:

[tex]\boxed{y=\frac{1}{2}x+3}[/tex]

Answer:

option A

[tex]\left[\begin{array}{ccc}9&-4&-5|9\\7&4&-4|-1\\6&-6&1|-5\end{array}\right][/tex]

Step-by-step explanation:

Steps to write equations in augmented form

Step 1

Write the coefficients of the x-terms as the numbers down the first column

Step 2

Write the coefficients of the y-terms as the numbers down the second column

Step 3

Write the coefficients of the z-terms as the numbers down the third column

Step 4

Write the constants which are in the end of equation in fourth column

Answer:

a. [tex]\left[\begin{array}{cccc}9&-4&-5&|9\\7&4&-4&|-1\\6&-6&1&|-5\end{array}\right][/tex]

Step-by-step explanation:

The given matrix is

9x-4y-5z=9

7x+4y-4z=-1

6x-6y+z=-5

The augmented matrix is the coefficient matrix combined with the constant matrix.

The coefficient matrix is obtained by writing the coefficient of the variables as a matrix.

The constant matrix is obtained by writing the constants as a column matrix.

Combining the two gives the augmented matrix;

[tex]\left[\begin{array}{cccc}9&-4&-5&|9\\7&4&-4&|-1\\6&-6&1&|-5\end{array}\right][/tex]

The volume is 45 I think

The cylinder shown has a volume of 90 cubic units. The cone and the cylinder have the same height and the same base. The volume of the cone will be 30 cubic units.

It is defined as the three-dimensional shape in which the base is a circular shape and if we go from circular base to top the diameter of the circle reduces and at the vertex, it becomes almost zero.

Given:

The volume of the cylinder= 90 cubic units

The volume of the cylinder=πr²h

90 cubic units=πr²h

The volume of a cone is;

[tex]\rm V= \frac{1}{3} \pi r^2h \\\\ V=\frac{1}{3} \times 90 \ cubic units \\\\ V=30 \ cubic \ units[/tex]

Hence, the volume of the cone will be 30 cubic units.

To learn more about the cone, refer to the link;

https://brainly.com/question/16394302

#SPJ2

Answer:

y=-1, x=-3

Step-by-step explanation:

First isolate x:

x+5y-5y=-8-5y

x=-8-5y

Then substitute (-8-5y) for x:

-6(-8-5y)+8y=10

Distribute and solve for y:

48+30y+8y=10

38y-48=10-48

38y=-38

y=-1

Use y to solve for x:

x+5(-1)=-8

x-5=-8

x-5+5=-8+5

x=-3

Answer:

whole number, integer, real numberrational

Step-by-step explanation:

Answer:

62°

Step-by-step explanation:

The 2 shown angles form a straight angle and sum to 180°, that is

7x + 20 + 4x + 6 = 180

11x + 26 = 180 ( subtract 26 from both sides )

11x = 154 ( divide both sides by 11 )

x = 14

the acute angle = 4x + 6 = (4 × 14) + 6 = 56 + 6 = 62°

Answer:

reflexive property

Step-by-step explanation:

it equals the same

hope this helps :)

Correct. It is the reflexive property

Because it equals the same

Answer:

36 meters, A

Step-by-step explanation:

I assume that P is the perimeter

So, all you have to do is count the sides and add them up

10+16+10=36 meters

Answer:

these are the answers -

i took the test theses were the answers -

A1 = more than two 1s

A2 = 0.4286

hope this helped !

Answer:

0.148

Step-by-step explanation:

Given that

probability that a candy will include a coupon for second candy bar = 0.20

Each candy having a coupon is independent of the other also there ae ony two outcomes.

Hence X no of candies which attract a coupon for second candy is binomial

with n = 7 and p = 0.20

Probability that  if she buys 7 candy bars, more than 2 will include a coupon.​

=P(X>2)

=P(x=2)+P(X=3)+P(x=4)+P(x=4)+P(X=5)+P(x=6)+P(x=7)

=0.148