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4 years ago

6

1.

1 answer:

Andreas93 [3]4 years ago

6 0

Question 1:

<span>b + 8 = 13

b = 13 - 8

b = 5

Hence, the answer is A.

Question 2:

</span><span>3x – 2 = 3x + 5

3x - 3x -2 = 5

-2 </span>≠ 5

Hence, the answer is A.

Question 3:

<span>5q – 10 = 75
</span>
5q = 75 + 10

5q = 85

q = $\frac{85}{5}$

q = 17

Hence, the answer is A.

Question 4:

<span>3(2t + 5) = 5t + 25
</span>
6t + 15 = 5t + 25

6t - 5t = 25 - 15

t = 10

Hence, the answer is C.

Question 5:

<span>6x – 2x – 5 = –6 + 21

4x = 15 + 5

4x = 20

x = </span> $\frac{20}{4}$

x = 5

Hence, the answer is D.

Question 6:

<span>4x = 64

x = </span> $\frac{64}{4}$

x = 16

Hence, Asher is wrong. You have to divide by 4 not subtract by 4.

Question 7:

<span>5(2x - 8) + 15 = -15

10x - 40 + 15 = -15

10x - 25 = - 15

10x = -15 + 25

10x = 10

x = </span> $\frac{10}{10}$

x = 1

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Is my answer correct or no? <br> ---> show explanation & details if i am wrong!!!

neonofarm [45]

Answer:

No, because the distance from the origin to point (7 , -7) is greater than the radius of the circle ⇒ 3rd answer

Step-by-step explanation:

From the graph of the circle

∵ The center of the circle F is at the origin

∴ F is (0 , 0)

∵ The circle passes through point (7 , 0)

- The length of the radius of the circle is the distance between

the center of the circle and a point on the circle

∴ r is the distance between points (0 , 0) and (7 , 0)

∴ $r=\sqrt{(7-0)^{2}+(0-0)^{2}}=\sqrt{49}=7$

∴ The length of the radius of the circle is 7 units

Let us find the distance between point (7 , -7) and the origin (0 , 0)

If the distance is equal to the radius of the circle, then the point is on the circle
If the distance is greater than the radius, then the point is outside the circle
If the distance is less than the radius, then the point is inside the circle

∵ The distance = $\sqrt{(7-0)^{2}+(-7-0)^{2}}=\sqrt{49+49}=\sqrt{98}=7\sqrt{2}$

∵ r = 7

∵ $7\sqrt{2}$ > 7

∴ The distance is greater than the radius of the circle

∴ Point (7 , -7) lies outside the circle

The correct answer is:

No, because the distance from the origin to point (7 , -7) is greater than the radius of the circle

<em>Your answer is not correct, the correct answer is the 3rd answer</em>

3 0

4 years ago

I need help asap!!!!!! pleaseeeee

sattari [20]

Find the area of the circle then, multiply that by the height of the cylinder.

Area of a circle = PI x r^2

Area = PI x 8^2 = 64PI

Volume = 64PI x 11 = 704PI in^3

3 0

3 years ago

Margo’s Dad offers to give her 5 cents on sunday. Then for each day of the week, he offers to give her 5 times the amount from t

goblinko [34]

Answer:

Step-by-step explanation:

First you need to do 5x5=25

6 0

3 years ago

Read 2 more answers

Find the range of the following piecewise function.

Anna11 [10]

Given:

The piecewise function is

$f(x)=\begin{cases}x+4 & \text{ if } -4\leq x$

To find:

The range of given piecewise function.

Solution:

Range is the set of output values.

Both functions $f(x)=x+4$ and $f(x)=2x-1$ as linear functions.

Starting value of $f(x)=x+4$ is at x=-4 and end value is at x=3.

Starting value: $f(-4)=-4+4=0$

End value: $f(3)=3+4=7$

Starting value of $f(x)=2x-1$ is at x=3 and end value is at x=6.

Starting value: $f(3)=2(3)-1=5$

End value: $f(6)=2(6)-1=11$

Least range value is 0 at x=-4 and 0 is included in the range because -4 is included in the domain.

Largest range value is 11 at x=6 and 11 is not included in the range because 6 is not included in the domain.

So, the range of the given piecewise function is [0,11).

Therefore, the correct option is A.

5 0

3 years ago

Suppose that 10% of all steel shafts produced by a certain process are nonconforming but can be reworked (rather than having to

balandron [24]

Answer:

0.9905,0.9837,0.8066

Step-by-step explanation:

Given that 10% of all steel shafts produced by a certain process are nonconforming but can be reworked (rather than having to be scrapped).

Each shaft is independent of the other and probability for non conforming is the same for each trial.

Hence X the among these that are nonconforming and can be reworked. is Bin with n =200 and p = 0.10

a) $P(X\leq 30) = 0.9905$

b) $P(X$

c) $P(15\leq x\leq 25)\\= F(25)-F(14)\\= 0.8995-0.0929\\= 0.8066$

6 0

3 years ago