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soldi70 [24.7K]
3 years ago
8

4x + 3x -7 =49 i need an answer.

Mathematics
2 answers:
Genrish500 [490]3 years ago
6 0

Answer:

<h2>x = 8</h2>

Step-by-step explanation:

4x+3x-7=49\qquad\text{combine like terms}\\\\(4x+3x)-7=49\\\\7x-7=49\qquad\text{add 7 to both sides}\\\\7x-7+7=49+7\\\\7x=56\qquad\text{divide both sides by 7}\\\\\dfrac{7x}{7}=\dfrac{56}{7}\\\\x=8

Sophie [7]3 years ago
3 0

Answer is provided in the image attached.

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A spinner has three sections. This table shows the results of spinning the arrow on the spinner 80 times.
UNO [17]

The experimental probability of the arrow stopping on Section 2 will be \rm \frac{3}{8}. is the ratio of the favorable event to the total number of events.

<h3>What is probability?</h3>

Probability means possibility. It deals with the occurrence of a random event. The value of probability can only be from 0 to 1.

No of arrows given in the different section ;

Section 1=18

Section 2=30

Section 3=32

The probability that the arrow stopping on Section 2 is found as;

\rm P = \frac{Favourable \ outcomes }{Total \ outcomes }  \\\\\ P= \frac{30}{18+30+32} \\\\ P=\frac{30}{80}\\\\ P= \frac{3}{8}

Hence, the experimental probability of the arrow stopping on Section 2 will be \rm \frac{3}{8}.

More about the probability link is given below.

brainly.com/question/795909

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7 0
2 years ago
A baby blue whale gains about 200 pounds each day about how many pounds does a baby blue whale gain per hour?
Thepotemich [5.8K]
Since there are 24 hours in a day and you want to figure out how many pounds a baby blue whale gains per hour you divide 200 by 24. You should get 8.3 as you answer. Hope I helped with that!
7 0
3 years ago
3<br>Find the value of a <br>in the equation,(3+4√3)(2-a√3)=-18+2√3​
ankoles [38]

Given:

The equation is:

\left(3+4\sqrt{3}\right)\left(2-a\sqrt{3}\right)=-18+2\sqrt{3}

To find:

The value of a.

Solution:

We have,

\left(3+4\sqrt{3}\right)\left(2-a\sqrt{3}\right)=-18+2\sqrt{3}

On simplification, we get

(3)(2)+(4\sqrt{3})(2)+(3)(-a\sqrt{3})+(4\sqrt{3})(-a\sqrt{3})=-18+2\sqrt{3}

6+8\sqrt{3}-3a\sqrt{3}-4a(3)=-18+2\sqrt{3}

6+8\sqrt{3}-3a\sqrt{3}-12a=-18+2\sqrt{3}

(6-12a)+(8-3a)\sqrt{3}=-18+2\sqrt{3}

On comparing both sides, we get

6-12a=-18

-12a=-18-6

a=\dfrac{-24}{-12}

a=2

And,

8-3a=2

-3a=2-8

a=\dfrac{-6}{-3}

a=2

Therefore, the value of a is 2.

3 0
3 years ago
WILL GIVE BRAINLIEST!
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