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3 years ago

25 points!

Mathematics

1 answer:

Dahasolnce [82]3 years ago

7 0

Answer:

Okay, so. What I'd do is this.

$(5x+3)+(x+3)=180$

Then I'd combine like terms.

So:

$(5x+3)+(x+3)=180\\ 6x+6=180$

Once you've got 6x, you subtract 6 from 180.

$(5x+3)+(x+3)=180\\ 6x+6=180\\6x=174$

Now all that's left to do is divide each side by 6 to get x.

X should be 29.

Step-by-step explanation:

$(5x+3)+(x+3)=180$

You know that adding the equations will give you 180 because you know they're supplementary.

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when ashley buys 7 postage stamp booklets she gets 140 stamps.she get 60 stamps in three booklets. write an equation to find the

Andreyy89

We can put this information into two equations:

7 booklets = 140 stamps
3 booklets = 60 stamps

Let us then focus on one equation to find the relationship:

7 booklets = 140 stamps

If we put that into a fraction, we get $\frac{7}{140}$ or $\frac{1}{20}$ .

This means that for every booklet, Ashley gets 20 stamps; or rather, each booklet has 20 stamps.

We can then see that this relationship holds true for the second equation as well:

$\frac{3}{60}$ or $\frac{1}{20}$ .

To write a general equation for this relationship using p for the number of postage stamps, and b for the number of booklets:

p = 20b

Where b is equal to p.

5 0

3 years ago

Select the most appropriate response

Sergio039 [100]

Answer:its A

Step-by-step explanation:

5 0

4 years ago

A triangle has side lengths 2.83 m, 4 m, and 2.24 m. The angles measures are 45°, 63°, and 72°.

vagabundo [1.1K]

Answer:

D) acute scalene

Step-by-step explanation:

<h3>What are the definitions?</h3>

Obtuse triangle - the triangle with angle greater than 90°;
Acute triangle - the triangle with all interior angles under 90°;
Isosceles triangle - the triangle with a pair of equal sides;
Scalene triangle - the triangle with all three sides (or angles) of different measure.

All sides are different and all angles are under 90°.

<h3>Which option is correct?</h3>

D) acute scalene

7 0

2 years ago

a positive number is 7 times another number if 3 is added to both the numbers then one of the new number becomes 5 by 2 times th

Neko [114]

Answer:

7 and 1

Step-by-step explanation:

Let the numbers be a and b.

<u>A positive number is 7 times another number:</u>

a = 7b

<u>If 3 is added to both the numbers then one of the new number becomes 5 by 2 times the other new number:</u>

a+3 = 5/2 × (b +3)

<u>To solve this we substitute </u><u>a</u><u> with </u><u>7b</u><u> in the second equation:</u>

7b + 3 = 5/2 × (b +3) ⇒ multiplying both sides by 2
14b + 6 = 5b + 15 ⇒ collecting like terms
14b - 5b = 15 - 6
9b = 9
b = 1 ⇒ solved for b

<u>Then, finding a:</u>

a= 7b
a=7*1
a= 7 ⇒ solved for a

<u>So the numbers are</u> 7 and 1

3 0

3 years ago

Which is what is the answer that estimates the product of 3.09×304.87

Feliz [49]

Answer:

900

Step-by-step explanation

That would be 3 * 300 = 900

8 0

3 years ago