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adelina 88 [10]
2 years ago
8

Help me please thank you

Mathematics
1 answer:
Lapatulllka [165]2 years ago
3 0
All of them except TR and PH
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Which expression is equivalent to b^-2/ab^-3 assume a=0 b=0
andrey2020 [161]
B^-2/ab^-3 = b^-2/b^-3 x 1/a = b^[-2-(-3)] x 1/a = b x 1/a = b/a
3 0
1 year ago
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A surveyor, Toby, measures the distance between two landmarks and the point where he stands. He also measured the angles between
KonstantinChe [14]
X² = Side1² + Side2² - 2[(Side1)(Side2)] cos(Toby's Angle)x² = 55² + 65² - 2[(55)(65)] cos(110°)x² = 3025 + 4225 -7150[cos(110°)]x² = 7250 - 2445.44x = √4804.56x = 69.31m
∴The distance, x, between two landmarks is 69.31m

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The two-way table of column relative frequencies below shows data on whether or not a person has internet access and their prefe
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Answer: c

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6 0
2 years ago
Three-fourths of the difference of a number and 7 is negative fifteen. The number is _______​
Vsevolod [243]

Answer:

x = -13

Step-by-step explanation:

Let the number be x. ATQ,

\dfrac{3}{4}(x-7)=-15

The above equation shows Three-fourths of the difference of a number and 7 is negative fifteen. We need to find the number.

cross multiplying both sides,

3(x-7)=-60\\\\x-7=-20\\\\x=-20+7\\\\x=-13

So, the number is -13.

4 0
2 years ago
Explain how to solve 4^x+3 = 7 using the change of base formula log base b of y equals log y over log b. Include the solution fo
Masja [62]

The value of x is 1

Explanation:

The equation is 4^x+3=7

Subtracting both sides by 3, we get,

4^x=4

Taking log on both sides, we get,

\log 4^{x}=\log 4

Rewriting the equation by 4^{x}=u

Thus, we have,

\log u=\log 4

Applying log rule, if \log f(x)=\log g(x), then f(x)=g(x)

Thus, u=4

Substituting u=4 in 4^{x}=u, we get,

4^x=4

Also, since, a^{f(x)}=a^{g(x)}, then f(x)=g(x)

Thus, x=1

Hence, the value of x is 1

7 0
1 year ago
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