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True [87]
3 years ago
8

−4x + 5y = −10 20a − 25b = 50

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
3 0

number one is x= 415=3 43 =3.75

number two is a= 45(b+2)

​

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Please help! functions operations. explain please
ValentinkaMS [17]

Answer:

a. 40

Step-by-step explanation:

Given

g(x)=2x and h(x)=x^2+4

(h\circ g)(x)=h(g(x))

(h\circ g)(x)=h(2x)

We plug in 2x into  h(x)=x^2+4.

(h\circ g)(x)=(2x)^2+4

(h\circ g)(x)=4x^2+4

We now substitute x=-3.

(h\circ g)(-3)=4(-3)^2+4

(h\circ g)(-3)=36+4=40

The correct choice is A.

7 0
3 years ago
Read 2 more answers
Which equation can be used to find 40 percent of 25?
Mandarinka [93]

25÷10=2.5      2.5×4=10

4(25÷10)

7 0
3 years ago
Simplify. Express your answer as a single fraction in simplest form.<br> x x<br> 5
lbvjy [14]

Answer:

\frac{x}{20}

Step-by-step explanation:

Given

\frac{x}{4} - \frac{x}{5}

The LCM of 4 and 5 is 20

= \frac{5x-4x}{20}

= \frac{x}{20}

5 0
2 years ago
Find the slope of a line passing through (1,2) and (3,5)
nasty-shy [4]

Answer:

The answer is: m = 3/2

Step-by-step explanation:

The slope m = (y - y1)/(x - x1]

Replace the variables with the points given:

m = (2 - 5)/(1 - 3)

m = -3/-2

m = 3/2

8 0
3 years ago
Jackson has 4 1/4 cups of chocolate. How can you write his amount of chocolate as a fraction greater than one
Zinaida [17]
If this is asking how to write this as a complex fraction, here's how:

First, do the whole number (4) multiplied by the diameter (4) to get 16. Then you take 16 and add this to the numerator (1) to get 17. Then your final answer is this number (17) over the original denominator (4), or 17/4

Hope this helps :)
5 0
2 years ago
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