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tiny-mole [99]
3 years ago
7

Only solve number 21

Mathematics
1 answer:
pantera1 [17]3 years ago
4 0

5-7+15-(-1) -2+15+1  -2+15 =13  13+1  Answer is 14    

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PLease hurry! i need it! And the testing thing is happening, so before 6 pm?
ololo11 [35]

\begin{cases} -x+3y=9\\\\ y=\cfrac{2}{3}x \end{cases} \\\\[-0.35em] ~\dotfill\\\\ -x+3y=9\implies 3y=9+x\implies \underline{3y-9=x} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{substituting ont the 2nd equation}}{y=\cfrac{2}{3}(\underline{3y-9})\implies 3y=2(3y-9)}\implies 3y=6y-18\implies 18+3y=6y \\\\\\ 18=3y\implies \cfrac{18}{3}=y\implies \boxed{6=y}

8 0
3 years ago
5. Will made his mini pecan tarts for the Southern themed school party. He bought 40
Julli [10]

Answer:

B.$ 0.39

Step-by-step explanation:

1 OUNCE OF PECAN =$7.84÷40=$0.196

2 OUNCES OF PECAN =$0.196×2=$0.39

3 0
3 years ago
Read 2 more answers
Please help! Brainliest Answer! Thank You!
ziro4ka [17]

Answer:

B) 63°

Step-by-step explanation:

<u>Step 1:</u> find the angle beside x (inside the pentagon)

<em>*A pentagon has a total of 540°</em>

119 + 100 + 116 + 88 = 423

540 - 423 = 117

<u>Step 2:</u> x is a supplementary angle, which means it's angle adds up to 180°

Since we know the other angle is 117°, we just subtract that from 180

180 - 117 = 63

x = 63

5 0
3 years ago
Joel is twice as old as Kayla in 5 years the sum of their ages will be 55 years what are the ages of two people
stealth61 [152]
Kayla is 15 while joel is 30
7 0
3 years ago
Read 2 more answers
18 is ( blank ) % of 30
meriva
Make an equation.

'is' is an equal sign

The blank can be 'x'

'of' = multiplication

18 = x * 30

Multiply:

18 = 30x

Divide 30 to both sides:

x = 0.6

Multiply by 100:

0.6 * 100 = 60%
4 0
3 years ago
Read 2 more answers
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