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Natasha2012 [34]
3 years ago
8

Help me- give you brainest

Mathematics
1 answer:
-BARSIC- [3]3 years ago
3 0

Answer:

x = -16/3

Step-by-step explanation:

you can put a 1 as the denominator for the 5x + 5 term and you'll have a proportion, which you can solve by cross-multiplying

\frac{5x+5}{1} = \frac{7x-6}{2}

2(5x+5) = 1(7x - 6)

10x + 10 = 7x - 6

3x = -16

You might be interested in
If fan is fully open, what is the approximate area of the fan? Answer choices are attached.
scoundrel [369]

Answer:

Option B. 78.8\ in^2

Step-by-step explanation:

step 1

Find the area of a circle with radius 8.5 inches

The area of a circle is equal to

A=\pi r^{2}

substitute

A=\pi (8.5)^{2}

A=72.25\pi\ in^2

step 2

Find put the approximate area of the fan

we know that

The area of complete circle subtends a central angle of 360 degrees

so

using proportion

Find the area that correspond a central angle of  125 degrees

\frac{72.25\pi}{360^o}=\frac{x}{125^o}\\\\x=72.25\pi(125^o)/360^o\\\\x=25.09\pi\ in^2

assume

\pi =3.14

25.09(3.14)=78.8\ in^2

8 0
3 years ago
X + 5y = 8<br> -x + 2y = -1<br> How is this solved?
Oksi-84 [34.3K]
Add both the equations together to eliminate x

x+5y=8
-x+2y=-1

7y=7
y=1

Now fill in y into the original equation

x+5(1)=8
x+5=8
x=3

Now you can check by filling x and y into the second equation.

-(3)+2(1)=-1
-3+2=-1
-1=-1

So your answer will be (3, 1)

Brainliest my answer if it helps you out?
8 0
3 years ago
0 15 - (-13)<br> How do I get the correct question
stepan [7]
I just know the answer is 28
5 0
4 years ago
Gina and Derek saw some trees on their walk through the park. They made a diagram showing the distance between trees. Please see
lara31 [8.8K]

Answer:

B. 9 yards

Step-by-step explanation:

you just have to add the oak to pine and pine to end then you subtract the total of maple to end.

8 0
2 years ago
What is 15% of 1085.6? Show your work
svetoff [14.1K]
15% of 1085/6 =
15/100 * 1085 6/10 =
= 15/100 * 10856/10 =
= 3/100 * 10856/2                  (after simplifying numerator of 15 and denominator of 10)
= 3/100 * 5428 =
= 16284/100 =
= <u>162,84</u>

Answer: 15% of 1085.6 is 162,84 (it's correct - I doublechecked it with calculator)
8 0
3 years ago
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