110 cm 50 cm 140cm 90 cm -110 cm - 70 cm

HACTEHA [7]

Answer:

x=-5

Step-by-step explanation:

When finding x, we basically have to isolate the variable. By isolating the variable, usually doing the opposite operation helps it.

Addition is the opposite of Subtraction

Multiplication is the opposite of Division

Let's dive into this problem!

x+7=2

(we need to isolate x. basically we need to get rid of this 7. How do we do this? since it is added by seven, we can subtract it by both sides to get rid of it on the x side.)

x+7=2

-7 -7

x=-5

(subtract 2-(-5), this adds to -5)

This is your final answer.

8 0

4 years ago

Read 2 more answers

A middle school took all of its 6th grade students on a field trip to see a ballet. The students filled 4753 seats, which was 97

Stells [14]

Answer:

4900

Step-by-step explanation:

first take 4753 and divide by the percent:97

then take that number and multiply by 100

5 0

3 years ago

Find the length of the third side. If necessary, round to the nearest tenth.

marshall27 [118]

Answer:

20

Step-by-step explanation:

a^2+b^2=c^2

15^2+b^2=25^2

225+b^2=625

b^2=400

Square root of 400 is 20

5 0

2 years ago

Read 2 more answers

Write a paragraph proof for the following conjecture.

qaws [65]

Answer:

See explanation

Step-by-step explanation:

Given: m∠SQR=55°.

m∠PQS=35°.

Prove: △PQR is a right triangle.

Paragraph proof

$\begin{array}{ccc}&\text{Statement}&\text{Reason}\\ \\1.&m\angle SQR = 55^{\circ}&\text{Given}\\2.&m\angle PQS = 35^{\circ}&\text{Given}\\3. &m\angle SQR+m\angle PQS=m\angle PQR&\text{Angle Addition Postulate}\\4.&m\angle PQR=55^{\circ}+35^{\circ}&\text{Substitution Property of Equality}\\5. & m\angle PQR=90^{\circ}&\text{Simplify}\\6. &\angle PQR\text{ is a }&\text{right angle }\\&\text{right angle}&\text{d}\\ 7.&\triangle PQR&\triangle\text{d} \end{array}$

Here d means definition

6 0

3 years ago

Can you please help me out

Taya2010 [7]

The bag contains,

Red (R) marbles is 9, Green (G) marbles is 7 and Blue (B) marbles is 4,

Total marbles (possible outcome) is,

$\text{Total marbles = (R) + (G) +(B) = 9 + 7 + 4 = 20 marbles}$

Let P(R) represent the probablity of picking a red marble,

P(G) represent the probability of picking a green marble and,

P(B) represent the probability of picking a blue marble.

Probability , P, is,

$\text{Prob, P =}\frac{required\text{ outcome}}{possible\text{ outcome}}$ $\begin{gathered} P(R)=\frac{9}{20} \\ P(G)=\frac{7}{20} \\ P(B)=\frac{4}{20} \end{gathered}$

Probablity of drawing a Red marble (R) and then a blue marble (B) without being replaced,

That means once a marble is drawn, the total marbles (possible outcome) reduces as well,

$\begin{gathered} \text{Prob of a red marble P(R) =}\frac{9}{20} \\ \text{Prob of }a\text{ blue marble =}\frac{4}{19} \\ \text{After a marble is selected without replacement, marbles left is 19} \\ \text{Prob of red marble + prob of blue marble = P(R) + P(B) = }\frac{9}{20}+\frac{4}{19}=\frac{251}{380} \\ \text{Hence, the probability is }\frac{251}{380} \end{gathered}$

Hence, the best option is G.

5 0

1 year ago