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2 years ago

I need help please with this math problem.

Mathematics

1 answer:

dezoksy [38]2 years ago

5 0

Answer:

They are equal

Both answer is 65

Step-by-step explanation:

5x -30 = 2x +27

5x -2x = 27 +30

3x = 57

x = 57/3 = 19

5x -30 = 5(19) -30 = 65

2x +27 = 2(19) +27 = 65

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8) Solve 4^(x - 2)= 8^6 A)5 B)8 C)10 D)11

myrzilka [38]

For this case we have the following equation:

$4 ^ {(x-2)} = 8 ^ 6$

We must create equivalent expressions in the equation, so that they have equal bases:

$2 ^ {2 * (x-2)} = 2 ^ {3 * 6}$

If the bases are the same, then the two expressions are only equal if the exponents are equal:

$2 (x-2) = 3 * 6\\2 (x-2) = 18\\2x-4 = 18\\2x = 18 + 4\\2x = 22\\x = \frac {22} {2}\\x = 11$

Answer:

$x = 11$

Option D

3 0

3 years ago

Read 2 more answers

1. Write a numerical expression for the phrase “twelve groups of the sum of fourteen and 10.”

Rom4ik [11]

The expression for five groups of a number added to seventeen.

Let the number be X
Five groups of the number will be 5X
The required expression will be
5(X) +17

6 0

3 years ago

4) Solve radical equations

blondinia [14]

R - 10 = 18 - r
2r = 28
r = 14

7 0

2 years ago

Help please

Mademuasel [1]

If Triangle ABC is similar to triangle DEF, then ∠A is congruent to ∠D, ∠B is congruent to ∠E, and ∠C is congruent to ∠F.

If ∠E = 40°, then ∠B = 40°.

There are 180° in a triangle. If ∠A = 35° and ∠B = 40°, then ∠C = 180° - 35° - 40°.

180 - 35 - 40 = 105°
m∠C = 105°

8 0

2 years ago

Find the Missing Numerator and Denominator

n200080 [17]

Answer:

missing denominator: 5

missing numerator: 3

Step-by-step explanation:

You know the product of fractions is formed by multiplying numerators and multiplying denominators.

$\dfrac{3}{d}\times\dfrac{n}{4}=\dfrac{3n}{4d}=\dfrac{9}{20}$

This gives rise to two equations:

3n = 9 ⇒ n = 3

4d = 20 ⇒ d = 5

The missing denominator is 5; the missing numerator is 3.

$\dfrac{3}{5}\times\dfrac{3}{4}=\dfrac{9}{20}$

7 0

2 years ago