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GarryVolchara [31]
4 years ago
6

Can anyone explain this to me? I honestly don't remember learning it this year.

Mathematics
1 answer:
wel4 years ago
7 0
19.
\tan(72)  =  \frac{8cm}{x}
20.
\sin(50)  =  \frac{x}{28in}

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Twice a number is less than or equal to the sum of a number and 15
Hoochie [10]

Answer:itequalsjeh

Step-by-step explanation:

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3 years ago
Solve the system:<br> 4x – 3y = -21<br> X=-y-14
Liula [17]

Answer:

The solution for the system of equations is

x=2,y=−2

Explanation:

4x−3y=14.....equation (1)

y=−3x+4.....equation (2)

Solving by substitution

Substituting equation 2 in equation 1

4x−3⋅(−3x+4)=14

4x+9x−12=14

13x=14+12

13x=26

x=2

Finding y by substituting x in equation 1

4x−3y=14

4⋅2−3y=14

8−3y=14

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4 0
3 years ago
Read 2 more answers
Rectangle A measures 10 inches by 8 inches. Rectangle B is an enlarged copy of Rectangle A. Select all of the measurement pairs
Fudgin [204]

Answer:

See Explanation

Step-by-step explanation:

Given

Rectangle A:

Length: 10\ in

Width: 8\ in

Required

Determine the possible dimensions of Rectangle B

<em>The question has missing options; however, the question can still be solved.</em>

<em></em>

Rectangle B being an enlarged copy of A implies that the dimension of A A is enlarged in equal proportion to form B

Take for instance, the measurements of Rectangle B are

Length: 15 in

Width: 12 in

Divide the corresponding lengths of B by A to get the enlargement ratio

Ratio = \frac{B}{A}

For length:

Ratio = \frac{15}{10}

Ratio = 1.5

For width

Ratio = \frac{12}{8}

Ratio = 1.5

Notice that both ratios are the same.

For this measurement of B, we can conclude that B is an enlargement of A

Assume another measurements for B

Length: 20\ in

Width: 10\ in

Calculate Ratios

Ratio = \frac{B}{A}

For length:

Ratio = \frac{20}{10}

Ratio = 2

For width

Ratio = \frac{10}{8}

Ratio = 1.25

Notice that, both ratios are not equal.

For this measurement of B, we can conclude that B is not an enlargement of A

<em>Conclusively, all you have to do is: determine the ratios of the dimensions of B to A, if the result are equal then B is an enlarged copy of A; if otherwise, then B is not an enlarged copy</em>

5 0
3 years ago
Julio checked the temperature of a bag of frozen peas and found it was at −12°C. After he left the bag out of the freezer for an
andrey2020 [161]

The temperature increased by 19°C

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3 years ago
For every 15 students there are 3 teachers in the school. Based on this information, about how many teachers are in a school wit
Yuliya22 [10]
This means for every 5 students there will be 1 teacher so 550/5=110
So answer is 110 teachers
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3 years ago
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