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MatroZZZ [7]
3 years ago
15

Evaluating Algebraic Expression

Mathematics
1 answer:
Olegator [25]3 years ago
7 0

So therefore the answer is –42

Step-by-step explanation:

5*–7–7= –42

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A grapefruit is 8% heavier than an orange, and an apple is 10% lighter than the orange.
likoan [24]
Weight of an grapefruit=weight of an orange+8% weight of an orange
weight of an apple=weight of an orange -10% weight of an orange

a.<span>By what percentage is the grapefruit heavier than the apple?
We should find the connection between grapefruit and an apple. We know the connection between the weight of a grapefruit and an orange, we know the connection between an orange and an apple, so this means we know the connection between a grapefruit and an apple.
</span>
weight of an grapefruit=weight of an <span>orange+8% weight of an orange
</span>weight of an orange=weight of an apple<span> +10% weight of an apple
</span>
-> weight of an grapefruit=weight of an apple+10% weight of an apple + 8%(weight of an apple+10% weight of an apple)= weight of an apple + 18% weight of an apple + 2% weight of an apple= <span>weight of an apple + 20% weight of an apple 

</span><span>b.By what percentage is the apple lighter than the grapefruit?
</span>weight of an grapefruit=weight of an apple + 20% weight of an apple<span> 
</span>
-> The apple ts 20% lighter than the grapefruit.
8 0
3 years ago
Read 2 more answers
Cual es la factorizacion prima del 20​
Verizon [17]

Answer:

Sí, 2 • 10 = 20. Luego factoriza 10, que también es divisible entre 2 (2 • 5 = 10). Ambos factores son primos, por lo que puedes detenerte. La factorización prima de 20 es 2 • 2 • 5, la cual puedes escribir usando la notación exponencial como 22 • 5.

Step-by-step explanation:  

espero que esto ayude ;)

3 0
4 years ago
Read 2 more answers
Find the area of a circle with a circumference of 31.42 centimeters.
andrew-mc [135]

Answer:

A≈78.56cm²

Hope this helps you out!

4 0
4 years ago
Read 2 more answers
What ordered pair does a direct variation always go through when graphed?
34kurt
C. (0,0) which is the origin
6 0
3 years ago
Given W(2-3). X(-4.9), Y(5. y), and Z(-1, 1), find the value of y so that so that segment WX is perpendicular to segment YZ.
DanielleElmas [232]

Answer:

4

Step-by-step explanation:

For WX to be perpendicular to YZ, then the product of their slope must be -1

For slope of WX

W(2-3) and X(-4.9),

Mwx = 9-(-3)/-4-2

Mwx = 12/-6

Mwx = -2

For slope of Y(5. y), and Z(-1, 1),

Myz = 1-y/-1-5

Myz = 1-y/-6

Since Mwx•Myz = -1

-2•(1-y/-6) = -1

1-y/3 = -1

1-y = -3

-y = -3-1

-y = -4

y = 4

Hence the value of y is 4

7 0
3 years ago
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