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Nastasia [14]
3 years ago
13

?/? X 45 = 4/5 of ? = ?

Mathematics
1 answer:
Stells [14]3 years ago
3 0

Step-by-step explanation:

\frac{4}{5} of \: x = 45 \\  \frac{4}{5}  \times x = 45 \\ cross \: multiply

\frac{4x}{5}  = 45 \\ 4x = 45 \times 5 \\ 4x = 225 \\ divide \: both \: sides \: by \: 4

\frac{4x}{4}  =  \frac{225}{4}  \\ x = 56.25

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Please helpppp thank y’all
julsineya [31]

Answer:

105

Step-by-step explanation:

since its  a straight line it would add up to 180 degrees so 52 + 23 + 75 and you need 180 so 180-75 which gives 105 which is the missing angle

6 0
4 years ago
Read 2 more answers
3x+5=245<br><br> Helpppppppppppp
SOVA2 [1]

<em>Answer:</em>

<em><u>X = 80</u></em>

<em>Step-by-step explanation:</em>

<em>Subtract </em><em>"5"</em><em> from both sides,</em>

<em>3x + 5 - 5 = 245 - 5</em>

<em><u>Simplify,</u></em>

<em>3x = 240</em>

<em><u>Divide both sides by </u></em><em><u>"3"</u></em><em><u>,</u></em>

<em>3x/3 = 240/3</em>

<em>X = </em><em>80</em>


<u><em>Hope this helps :-)</em></u>

8 0
3 years ago
Read 2 more answers
Q = 5p + 3r<br> If p=6<br> And if r=-4<br> Work out the value of q.
Marat540 [252]

Answer: q = 18

Step-by-step explanation:

q=5p+3r, p=6, r=-4

First, let's plug in the numbers that we <em>do</em> know

q=5(6) + 3(-4)

Second, we should be able to figure the equation now that it is in simplified form.

q = 30 + (-12)

q = 18

3 0
3 years ago
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The total surface area of a right cylinder which has a base diameter of 10 cm and a height of 7 cm is:
tresset_1 [31]

Answer:

377 square centimeters

Step-by-step explanation:

Formula: h(2×pi×radius) I know there's a second part but I'm doing this first.

First find the radius, in the problem it says a diameter of 10cm

Divide 10 by 2 to find the radius = 5

I'm going to use 3.14 as Pi

7(2×3.14×5)

7(31.4) = 219.8

Next part, solving for the 2 circles

Formula: 2×pi×radius²

2×3.14×5²

solve 5² first (5×5) = 25

2×3.14×25 is 157

add 219.8 and 157 = 376.8 round to 377

Answer: 377 square centimeters

3 0
3 years ago
Translate the following equation into a verbal sentence: x + 3 = 2(6 + x)
SIZIF [17.4K]

Answer:

"x" plus three equals to two times six plus "x"

5 0
3 years ago
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