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Vesnalui [34]
3 years ago
14

Substitution property of equality if y=-5 and 7x+y=11, then

Mathematics
2 answers:
slamgirl [31]3 years ago
8 0
X = 16/7 Because if you substitute -5 in for y you get x = 16/7 and you can check by plugging in 16/7 in for x and you get -5 for y so your answer is: x=16/7
lara31 [8.8K]3 years ago
4 0
Subtraction Property of Equality.  Subtract 5 on both sides to get 7x=6.  Then do the Division Property of equality to get x= .86
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Please answer this question now
borishaifa [10]

Answer:

70 degrees

Step-by-step explanation:

Measure of arc ABC is 128 degrees, so measure of arc BC is 128-90 = 38 degrees.

Meausure of arc BCD is 102 + 38 = 140 degrees, so measure of angle A is 140/2 = 70 degrees

7 0
2 years ago
Read 2 more answers
Given a polynomial f(x), if (x − 4) is a factor, what else must be true?
ollegr [7]

Answer:

f(4)=0


Step-by-step explanation:

<em>The </em><em>Remainder Theorem</em><em> states that when you divide a polynomial f(x)  by a linear factor  (x-a) , where a  is a constant, the remainder is f(x)  evaluated at x=a</em>

<em>Moreover, according to the </em><em>Factor Theorem</em><em>, an extension of the Remainder Theorem, if the remainder of the function f(x) is </em><em>0</em><em> when evaluated at x=a , then (x-a)  is said to be a factor of the polynomial f(x)</em>

Given the 2 theorems above, it follows that if (x-4)  is a factor of f(x) , then the remainder is equal to 0 when f(x) is evaluated at x=4

Which means f(4)=0

Third answer choice is correct.


3 0
3 years ago
Read 2 more answers
Which kind of map would be used to show population in the countries of the world?
yaroslaw [1]

It would be a special purposes map :)

3 0
3 years ago
Ry-wy=t solve for y
Greeley [361]

Answer:

y = \frac{t}{R-w}

Step-by-step explanation:

Given

Ry - wy = t ← factor out y from each term on the left side

y(R - w) = t ( divide both sides by (R - w ) )

y = \frac{t}{R-w}

3 0
3 years ago
Read 2 more answers
If the ratio of corresponding segments is 2:3, then the ratios of the areas and volumes are
kobusy [5.1K]

Answer:

4:9

Step-by-step explanation:

Area is squaring and Volume is cubing

So it'd be 2^2:3^3, or 4:9

I hope this helped and have a good rest of your day!

6 0
3 years ago
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