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salantis [7]
3 years ago
12

+ 5 = 7" align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
Lera25 [3.4K]3 years ago
4 0
2x + 5 =7
Subtracting 5 from both sides
= 2x +5-5 = 7-5
=2x = 2
= x = 2/2
=x = 1
liraira [26]3 years ago
3 0
Yeah, your right cause you js use a calculator 2x+5=7
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A tower stand on a horizontal plane. P is the top and Q is the bottom of the tower. A and B are two points on this plane such th
pochemuha

Answer:

32√5

Step-by-step explanation:

We have the right triangles PQA and PQB as well as the given right triangle QAB.

cot(PAQ) = 2/5 = QA/PQ

cot(PBQ) = 3/5 = QB/PQ

cot(PAQ) / cot(PBQ) = (2/5) / (3/5) = 2/3

cot(PAQ) / cot(PBQ) = (QA/PQ) / (QB/PQ) = QA / QB

QA / QB = 2/3

QA = (2/3) QB

QB = (3/2) QA

By the Pythagorean Theorem we have:

(QA)² + 32² = (QB)²

(QA)² + 32² = (3/2 QA)²

(QA)² + 1024 = (9/4) (QA)²

(5/4) (QA)² = 1024

(QA)² = (4/5)1024 = 4096/5

QA = 64/√5

Solve for PQ.

cot(PAQ) = QA/PQ

PQ = QA / cot(PAQ)

PQ = (64/√5) / (2/5) = 32√5

The height of the tower is 32√5.

7 0
4 years ago
Linda already owns 7 necklaces, and additional necklaces are priced at 3 for a dollar. Write an equation that shows the relation
maksim [4K]

Answer:

95+5x=13x

I'd if this is right im not smart

6 0
3 years ago
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If the ribosomes were not working properly then your cell would not be producing proteins. If your cell did not produce proteins
AveGali [126]

Answer:

I think the answer is ribosomes.

Hope this helps!!  <3

4 0
3 years ago
A costumer placed an order with a bakery for muffins.The Baker has completed 37.5% of the order after baking 81 muffins. How man
Elza [17]
216 ? Maybe . I think you have to multiply 81 times .375 you move the decimal two places over . I believe that’s how you do the problem
5 0
3 years ago
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Find the sum of <br> -6 1/8+1 1/4
Vlad [161]

Answer:

\large\boxed{-4\dfrac{7}{8}=-4.875}

Step-by-step explanation:

To add two fractions, they must have the same denominator.

LCD = 8

1\dfrac{1}{4}=1\dfrac{1\cdot2}{4\cdot2}=1\dfrac{2}{8}

-6\dfrac{1}{8}+1\dfrac{1}{4}=-6\dfrac{1}{8}+1\dfrac{2}{8}=-\left(6\dfrac{1}{8}-1\dfrac{2}{8}\right)=(*)\\\\\text{We know}\ 1=\dfrac{8}{8},\ 6=5+1=5+\dfrac{8}{8}=5\dfrac{8}{8}.\\\\\text{Therefore}\ 6\dfrac{1}{8}=5\dfrac{8+1}{8}=5\dfrac{9}{8}\\\\(*)=-\left(5\dfrac{9}{8}-1\dfrac{2}{8}\right)=-\bigg((5-1)+\dfrac{9-2}{8}\bigg)=-\bigg(4+\dfrac{7}{8}\bigg)=-4\dfrac{7}{8}

You can convert the fractions to the decimals.

6\dfrac{1}{8}=8.125\\\\1\dfrac{1}{4}=1.25\\\\-6\dfrac{1}{8}+1\dfrac{1}{4}=-6.125+1.25=1.25-6.125=-4.875

5 0
3 years ago
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