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skad [1K]
3 years ago
11

3x + 2x = -15 awnser

Mathematics
1 answer:
Eddi Din [679]3 years ago
8 0
3x+2x=-15
5x=-15
5x/5 = -15/5
x=-3
Numbers with the same variable can be combined, which would make you add 3x and 2x to give you 5x. then to get rid of the 5 in front of the x, divide BOTH sides by 5, the 5 is then divided out from the x, and -15 divided by three is -3
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Evaluate each logarithm. Do not use a calculator. Log (125)(1/25)
svetlana [45]

Answer:

-2/3

Step-by-step explanation:

Log125(1/25)=x

Raise each side to the base of 125

125^Log125(1/25)=125^x

1/25 = 125^x

Rewrite 25 as a power of 5  and 125 as a power of 5

1 / 5^2 = 5^3^x

The if power is in the denominator, we can bring it to the numerator by making it negative

5^-2 = 5^3^x

We know that a^b^c = a^(b*c)

5^-2 = 5^(3*x)

Since the bases are the same, the exponents are the same

-2 = 3x

Divide by 3

-2/3 = 3x/3

-2/3 =x

6 0
3 years ago
Find the tangent of angle A (giving brainliest and thanks to all!)
Shtirlitz [24]

Answer:

Option B, 8 / 6

Step-by-step explanation:

Tangent = Opposite / Adjacent

Tangent of ∠A = Opposite / Adjacent

Tan(A) = 8 / 6 which is the same as Option B

Hope this helps!

3 0
3 years ago
Which is the equivalent of 12.42 written in DMS form?
nika2105 [10]
12.42

12°+.42(60)

12°25.2'

12°25'+.2(60)

12°25'12"
3 0
2 years ago
Read 2 more answers
On Monday, a museum had 600 visitors. On Tuesday, it had 740 visitors. Estimate the percent change in the number of visitors to
prisoha [69]
15 percent I think :)))))))))))))))))(
3 0
3 years ago
7.
nika2105 [10]

Answer:

B. {–3, 5.9, 8.3}

Step-by-step explanation:

The domain is the set of all the values of  

x .The range is the set of all the values of  y .

Domain: { 3.2 , 7.6 , 1.4 , − 9.1 }

Range: { − 3 , 5.9 , 8.3 }

Answer:

range is -3, 5.9 , 8.3

Step-by-step explanation:

{(3.2, –3), (7.6, 5.9), (1.4, –3), (–9.1, 8.3)}

We are given with set of ordered pairs (x,y)

In each ordered pair, x is the domain and y is the range

for domain , take all the x  values (first number) from the ordered pairs

for range, take all the y value (second number) from the ordered pairs

y values of the ordered pairs are -3, 5.9, -3, 8.3

So range is -3, 5.9 , 8.3

3 0
2 years ago
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