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3 years ago

Evaluate the expression below when y = -3. 2y + 7 -4y − 10

2 answers:

7 0

The problem asks:

what is 2y+7 when y=-3?

Since y=-3 then 2y+7=2(-3)+7=-6+7=1.

Similarly, when y=-3, -4y − 10=-4(-3) − 10=12-10=2.

Answer:

2y + 7=1

-4y − 10=2

Marianna [84]3 years ago

5 0

2y + 7=1 -4y − 10=2

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A circular mirror has a diameter of 12 inches. A circular frame that is 3 inches wide surrounds the mirror. What is the combined

soldi70 [24.7K]

Answer:

$176.71$ $in^{2}$

Step-by-step explanation:

The equation to use to find the radius of a circle is $r = \frac{d}{2}$

The equation to use to find the area of a circle is $A = \pi r^{2}$

First, add $3$ inches to the diameter of $12$ inches. You will get $15$ inches.

Second, you will want to find the radius. Substitute $15$ for $d$ . Solve to get the radius.

$r = \frac{15}{2}$

$r = 7.5$

The radius is $7.5$ inches.

Next, you substitute $7.5$ for $r$ in the area equation. Solve to get the area.

$A = \pi (7.5)^{2}$

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3 years ago

Find the 7th term of the geometric sequence with the given terms.

ohaa [14]

Answer:

1. 1458

2. 500 or -500

Step-by-step explanation:

1. a4=54, a5=162

r = 162/54 = 3

a7 = a5 × r²

= 162 × 3² = 1458

2.a4=-4, a6=-100

r² = -100/-4 = 25

r = +/- 5

a7 = a6 × r

= -100 × +/- 5

= +/- 500

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4 years ago

Which expression is equivalent to (16x^8y^-12)^1/2

MAVERICK [17]

Answer:

The equivalent expression is $\Rightarrow \dfrac{4x^4}{y^6}$

Step-by-step explanation:

Given: $(16x^8y^{-12})^{1/2}$

We need to simplify the expression. We will distribute radical with each term inside the parentheses.

$\Rightarrow (16x^8y^{-12})^{1/2}$

Distribute the radical

$\Rightarrow 16^{1/2}\cdot x^{8\cdot 1/2\cdot y^{-12\cdot 1/2}$

$\Rightarrow 4\cdot x^4\cdot y^{-6}$

$\Rightarrow 4x^4y^{-6}$

Now we will simplify the negative exponent.

$\Rightarrow \dfrac{4x^4}{y^6}$

Hence, The equivalent expression is $\Rightarrow \dfrac{4x^4}{y^6}$

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3 years ago

Would the answer be .0115 Km?

uysha [10]

Yes it would be 0.115 km.

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3 years ago

Read 2 more answers

8n-9m=6-3m in standard form

Klio2033 [76]

Answer:

-6m+8n-6=0

Step-by-step explanation:

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3 years ago