3 years ago

Given 4s+3-8t when s=7 and t=2.

Mathematics

1 answer:

yaroslaw [1]3 years ago

3 0

Answer:

Step-by-step explanation:

$4x+3-8t\\\\s=7\\\\t=2\\\\4(7)+3-8(2)\\\\28+3-16\\\\28-13\\\\15$

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3 years ago

Evaluate a^2b^2? when a = 5 and b = 3.

kvasek [131]

Answer:

$D) 7$

Step-by-step explanation:

$a^{2} -2b^{2}$

$a=5$

$b=3$

$\left(5\right)^2-2\left(3\right)^2$

Calculate 5 to the power of 2 and get 25:-

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Calculate 3 to the power of 2 to get 9 and then multiply 2 and 9 to get 18:-

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2 years ago

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9966 [12]

Answer:

Step-by-step explanation:

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2 years ago

10x + 4y = 24 6x +12y = 48 What is the value of y? * A. 7 B. 7/2 C. 1 D. -7/2

ziro4ka [17]

Answer:

Step-by-step explanation:

1) lets use elimination to solve this:

multiply 10x+4y=24 with 3 in order to get "4y" into "12y"

3(10x+4y=24)

30x+12y=72

now subtract both equations to eliminate 'y"

30x+12y=72

6x+12y=48

---------------------

24x=24

x=1

now substitute 1 in the above equation:

6(1)+12y=48

6+12y=48

12y=42

y=7/2

4 0

2 years ago

Best has knitted 5/8 of the scarf she is making has she needed more than one half of the scarf can't find the equivalent fractio

BabaBlast [244]

To compare 5/8 and 1/2, you will need to create fractions that have the same denominator. 1/2 is the same as 4/8.

5/8 is greater than 4/8, so she had knitted more than 1/2.

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2 years ago