2 years ago

Help me please im not good a this

Mathematics

1 answer:

Ghella [55]2 years ago

3 0

0,-5 i hope this is can sorry if its wrong

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In addition to the facts in the diagram which statements is necessary to prove that the two triangles are congruent by the SAS c

atroni [7]

The angles should be included between the equal sides

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2 years ago

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Three vertices of a rectangle are given. Find the coordinates of the fourth vertex. (-3,-3) (7,-3) (7,2)

Alik [6]

The answer is D.

(-3, -3), (-3, 2)
(7, -3), (7, 2)

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2 years ago

for a class of 24,78% of students got a B or better on the tex How many students is this? Round to a wholenumber

natita [175]

Step 1

Use the ratio of the number to the percentage to get the required answer.

$\frac{Total\text{ number of students}}{\text{The required number of students}}=\frac{Total\text{ percentage of the class}}{\text{Given percentage}}$

Where,

$\begin{gathered} \text{The total number of students = 24} \\ \text{The required number }of\text{ students= x} \\ \text{The total percentage of the class = 100} \\ \text{Given percentage = 78} \end{gathered}$

Step 2

Get the required answer

$\begin{gathered} \frac{24}{x}=\frac{100}{78} \\ 100x=24\times78 \\ 100x=1872 \\ \frac{100x}{100}=\frac{1872}{100} \\ x=\text{ 18.72} \\ \text{Hence} \\ x\approx19students\text{ rounded to a whole number } \end{gathered}$

The number of students that got B or a better grade on the test = 19 students rounded to a whole number.

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7 months ago

Simplify. <br>1: if y>0<br>2: if y<0<br><img src="https://tex.z-dn.net/?f=1%29%3A%20-15%5Csqrt%7By%5E2%7D%5C%5C2%29%3A%20-

Kruka [31]

In general, √(y²) = |y|, since y can be positive or negative and y² would have the same value either way.

So,

1) if y > 0, then |y| = y, and

-15√(y²) = -15 |y| = -15y

2) if y < 0, then |y| = -y, and

-√(16y²) = -|4y| = -|4| |y| = -4 (-y) = 4y

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2 years ago

I need help, please.

schepotkina [342]

$p = 2(l + w) = 2.(15 + 12) = 54 cm$

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2 years ago