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N76 [4]
3 years ago
7

Help! Please I’m not sure what to do I forgot

Mathematics
2 answers:
JulijaS [17]3 years ago
7 0

Answer:

∠ B = 54°

Step-by-step explanation:

Supplementary angles sum to 180°, so

7x + 7 + 4x - 14 = 180

11x - 7 = 180 ( add 7 to both sides )

11x = 187 ( divide both sides by 11 )

x = 17

Then

∠ B = 4x - 14 = 4(17) - 14 = 68 - 14 = 54°

suter [353]3 years ago
3 0
Can someone help me also
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What shape is produced when slicing a right rectangular pyramid perpendicular to the base?
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I believe the answer is B. Triangle

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3 years ago
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9 burgers and 1 doughnut cost $31.30. 3 doughnuts and 6 burgers cost $26.70. Find the cost of 2 burgers.​
kirill [66]

Step-by-step explanation:

Let assume that

Cost of 1 burger = $ x

Cost of 1 doughnuts = $ y

According to statement, 9 burgers and 1 doughnut cost $ 31.30

\begin{gathered}\sf \: 9x + y = 31.3 \\ \\ \end{gathered}

\begin{gathered}\sf\implies \sf \: y = 31.3 - 9x - - - (1) \\ \\ \end{gathered}

According to statement again, 3 doughnuts and 6 burgers cost $ 26.70

\begin{gathered}\sf \: 6x + 3y = 26.7 \\ \\ \end{gathered}

\begin{gathered}\sf \: 3(2x + y) = 26.7 \\ \\ \end{gathered}

\begin{gathered}\sf \: 2x + y = 8.9 \\ \\ \end{gathered}

On substituting the value of y from equation (1), we get

\begin{gathered}\sf \: 2x + 31.3 - 9x = 8.9 \\ \\ \end{gathered}

\begin{gathered}\sf \: 31.3 - 7x = 8.9 \\ \\ \end{gathered}

\begin{gathered}\sf \: - 7x = 8.9 - 31.3 \\ \\ \end{gathered}

\begin{gathered}\sf \: - 7x = - 22.4 \\ \\ \end{gathered}

\begin{gathered}\bf\implies \: x = 3.2 \\ \\ \end{gathered}

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Cost of 2 burgers = 3.2 × 2 = <u>$ 6.4</u>

5 0
1 year ago
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The diagram shows a circle inscribed in a square.
beks73 [17]

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A=3.14*(12/2)^2

A=3.14*(6)^2

A=3.14*36

A=113.04 m^2

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3 years ago
Help pwees .................
Rina8888 [55]

Answer:

1 + 1 = 2

Step-by-step explanation:

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2 years ago
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The volume of a cube is 64 cubic inches. Which expression represents s, the length of a side of the cube?
vlabodo [156]

Answer:

<h2>Therefore the length of a side of a cube is \sqrt[3]{64}\ or\ 4</h2>

Step-by-step explanation:

The volume of a cube is expressed as L³ where L is the length of each side of the cube.

Given volume of a cube = 64in³

On substituting;

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8 0
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