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Savatey [412]
3 years ago
5

Danielle is x years old. Her sister is five years older and her brother is half Danielle’s age. Write an expression in simplest

form for the sum of their ages
Mathematics
1 answer:
Alborosie3 years ago
7 0
Let x = Danielle, x + 5 = her sister, and .5x = her brother.

x + x + 5 + .5x = the sum of their ages.

Then we simplify to get 2.5x + 5 = the sum of their ages.
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In a volleyball game, Caroline served the ball over the net 16 out of 20 times. What percent did she not make her serve over the
brilliants [131]

16/20. We reduce that and get 4/5.

After this it's much simpler to chage it.

100 dividied by 5 is 20. (20,40,60,80,100)

So the 4th number (4/100)

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3 years ago
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The exponent indicates how many times the what is used
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A pair of shorts are £15 in a 40%. What was the non-sale price
lana66690 [7]

Answer:

£10.71

Step-by-step explanation:

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Original price = x

Using the expression to calculate x

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x +0.4x = 15

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4 0
3 years ago
What is the solution to the equation One-fourth x + 2 = negative StartFraction 5 Over 8 EndFraction x minus 5? X = negative 8 x
Ede4ka [16]

Answer:

(A)x= -8

Step-by-step explanation:

One-fourth x + 2 = \frac{1}{4}x+2

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Next, we Expand the Left hand Side by multiplying each term in the bracket by 1/4

\frac{1}{4}x+\frac{2}{4}=-\frac{5}{8}x-5

Bringing terms with x to the left Hand Side i.e. collecting like terms

\frac{1}{4}x+\frac{5}{8}x=-5-2\\\\(\frac{1}{4}+\frac{5}{8})x=-7\\\\\frac{7}{8}x=-7

On Cross multiplying

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5 0
3 years ago
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nadezda [96]
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<span><span><span>−<span>37n</span></span>−75</span>=<span>−65</span></span><span><span><span><span>−<span>37n</span></span>−75</span>+75</span>=<span><span>−65</span>+75</span></span><span><span>−<span>37n</span></span>=10</span><span><span><span>−<span>37n</span></span><span>−37</span></span>=<span>10<span>−37

</span></span></span><span>n= <span><span>−10/</span>37  <--------- answer</span></span>
8 0
3 years ago
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