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marshall27 [118]
3 years ago
6

What is 15-10c=13 worked out

Mathematics
1 answer:
exis [7]3 years ago
7 0

Answer:

15 - 10c = 13 \\ 10c = 15 - 13 \\ 10c = 2 \\ c =  \frac{2}{10}  \\ c =  \frac{1}{5}

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it takes someone 15 minutes to prepare 3 1/4 cups of juice how many hours would it take to prepare 32 1/2 cups of juice​
wariber [46]

\bf \begin{array}{ccll} minutes&\stackrel{juice}{cups}\\ \cline{1-2} 15&3\frac{1}{4}\\\\ x&32\frac{1}{2} \end{array}\implies \cfrac{15}{x}=\cfrac{3\frac{1}{4}}{32\frac{1}{2}}\implies \cfrac{15}{x}=\cfrac{\frac{3\cdot 4+1}{4}}{\frac{32\cdot 2+1}{2}}\implies \cfrac{15}{x}=\cfrac{\frac{13}{4}}{\frac{65}{2}}

\bf \cfrac{15}{x}=\cfrac{~~\begin{matrix} 13 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}{\underset{2}{~~\begin{matrix} 4 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}}\cdot \cfrac{~~\begin{matrix} 2 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}{\underset{5}{~~\begin{matrix} 65 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}}\implies \cfrac{15}{x}=\cfrac{1}{10}\implies 150=x\leftarrow \begin{array}{llll} \textit{150 minutes or}\\\\ \textit{2 hours and a half} \end{array}

4 0
2 years ago
Circle has a radius of 4 and the center is (-4,-8) what is the equation of the circle if I double the radius
wariber [46]

9514 1404 393

Answer:

  (x +4)^2 +(y +8)^2 = 64

Step-by-step explanation:

The equation of a circle with center (h, k) and radius r is ...

  (x -h)^2 +(y -k)^2 = r^2

The circle centered at (h, k) = (-4, -8) with radius 8 has equation ...

  (x +4)^2 +(y +8)^2 = 64

4 0
3 years ago
If 5x + 4y= 13 and 4x + 5y = 14, find the value of (x - y).​
soldi70 [24.7K]

Answer:

x - y = - 1

Step-by-step explanation:

Given the 2 equations

5x + 4y = 13 → (1)

4x + 5y = 14 → (2)

Subtract (2) from (1) term by term , that is

(5x - 4x) + (4y - 5y) = 13 - 14

x - y = - 1

8 0
2 years ago
Read 2 more answers
Calculate the value of x for the equation 7x +3+2= 26.<br> A. 2<br> B. 3<br> C. -3<br> D. 21
Nookie1986 [14]
The answer is B because 26-2 is 24 and 24-3 is 21 and 21/7 is 3 therefore x=3
8 0
2 years ago
Read 2 more answers
What is the measure of angle 7?
goldenfox [79]

Answer:

measure of Angle 7 would also be (3y - 8), by the alternate exterior angles theorem

Hope this helps!

5 0
2 years ago
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