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seraphim [82]
3 years ago
7

All the answers and how each fits in each blank

Mathematics
1 answer:
lyudmila [28]3 years ago
5 0

Answer:last 2 are quarts and miles

Step-by-step explanation:

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What is the value of 7 ^−3 ^ −1 for = −2 and = 4?
andrey2020 [161]

Answer:

d. −7/32

Step-by-step explanation:

The expression that we have to evaluate in this problem is:

7x^{-3}y^{-1}

We have to evaluate this expression for:

x = -2

y = 4

We start by rewriting the expression by rewriting it using the following:

a^{-n}=\frac{1}{a^n}

So the expression can be rewritten as

7x^{-3}y^{-1}=\frac{7}{x^3 y}

Now we observe that:

(-2)^3=(-2)(-2)(-2)=-8

Therefore, by substituting x = -2 and y = 4 into the expression, we find:

\frac{7}{(-2)^3\cdot 4}=\frac{7}{-8\cdot 4}=-\frac{7}{32}

8 0
3 years ago
What is the algebraic expression for "the sum of three times a number and seven"? A. 3 x + 7 B. 3 x + 11 x C. 3 + 7 x
Arada [10]

Answer:

3x+7

Step-by-step explanation:

Three times a number, let x be the number and 7 so plus 7

4 0
3 years ago
Read 2 more answers
Factorise fully<br> 2x+14
Y_Kistochka [10]

Answer:

2 (x + 7)

Step-by-step explanation:

2x + 14

2 (x+7)

I hope this helps

8 0
3 years ago
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Marquis wrote the linear regression equation y=1.245x - 3.684 to predict the cost, y, of x songs purchased. Marquis spent $40 on
jasenka [17]
What you should do for this casp is to use the given expression and clear the value of x.
 We have then:
 y = 1.245x - 3.684
 Clearing x:
 1.245x = (y + 3.684)
 x = (y + 3,684) / (1,245)
 Substituting the value of y:
 x = ((40) +3,684) / (1,245) = 35.09
 x = 35
 answer:
 the best estimate of the number of songs that Marquis purchased is 35
4 0
4 years ago
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Lobachevsky's Negation created spherical geometry.<br>O A. True<br>O B. False​
Rashid [163]

Answer:

True

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
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