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3 years ago

Thirty increased by 5 times a number equals 80. Write only the equation!!!!!

Mathematics

1 answer:

andrew-mc [135]3 years ago

3 0

Answer:

5 times x + 30 = 80 (x=10)

Step-by-step explanation:

5 times 10 is 50

50+30 is 80

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Covert 77 1/2% to a fraction in lowest term

Elodia [21]

$77\frac{1}{2} \%$ converted to fraction in lowest terms is $\frac{31}{40}$

<em><u>Solution:</u></em>

Given that we have to convert $77\frac{1}{2} \%$ to fraction in lowest terms

Let us first convert the mixed fraction $77\frac{1}{2}$

Multiply the whole number part by the fraction's denominator.

Add that to the numerator.

Then write the result on top of the denominator.

Therefore,

$77\frac{1}{2} \% = \frac{77 \times 2+1}{2} \% = \frac{155}{2} \%$

$\frac{155}{2} \% = 77.5 \%$

Now convert 77.5 % to fraction

So we have to convert percentage to fraction

Divide the percentage by 100 to get a decimal number

$77.5 \% = \frac{77.5}{100} = 0.775$

Use that decimal number as the numerator of a fraction. Put a 1 in the denominator of the fraction

Count the number of places to the right of the decimal. If you have x decimal places then multiply numerator and denominator by $10^x$

$0.775 = \frac{0.775}{1} \times \frac{1000}{1000} = \frac{775}{1000}$

Simplify and reduce the fraction to lowest terms

$\rightarrow \frac{775}{1000} = \frac{31}{40}$

Thus the given percentage is converted to fraction in lowest terms

7 0

3 years ago

I need the answer to the problem 7e^((3x-5))=49

Vikentia [17]

Answer:

$x\approx2.3153$

Step-by-step explanation:

$7e^{3x-5}=49$

$e^{3x-5}=7$

$3x-5=ln(7)$

$3x=ln(7)+5$

$x=\frac{ln(7)+5}{3}$

$x=2.315303383$

$x\approx2.3153$

6 0

3 years ago

PLEASE HELP QUICKLY I NEED HELP

STatiana [176]

Answer:the question is blurry for me

Step-by-step explanation:

8 0

3 years ago

Can anyone help me?pls

Mama L [17]

Answer/Step-by-step explanation:

Given:

C = right angle = 90°

BC = a = ?

AB = c = 12

AC = b = 9

Required:

a, <A, and <B

Solution:

✔️Find a using Pythagorean Theorem:

a = √(c² - b²)

a = √12² - 9²) = √63

a = 7.93725393 = 8 (nearest whole number)

✔️Find A by applying trigonometric ratio:

Thus,

Reference angle = A

Hypotenuse = 12

Adjacent = 9

Therefore,

$cos(A) = \frac{adj}{hyp} = \frac{9}{12}$

$cos(A) = 0.75$

$A = cos^{-1}(0.75)$

m<A = 41° (nearest whole number)

✔️Find B:

m<B = 180 - (90 + 41) (sum of interior angles of triangle)

m<B = 49°

8 0

3 years ago

What shape would this be

frez [133]

It would be an Cylinder

3 0

3 years ago