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Oliga [24]
2 years ago
11

Help please!! thank you

Mathematics
2 answers:
Juli2301 [7.4K]2 years ago
5 0
Answer: b

Explanation:
If there is a 379 page book and they can read 28 in a hour then you would find out how many hours and then you would add 54 because they have already read those pages
laila [671]2 years ago
4 0

Answer:

B

Step-by-step explanation:

It is a 379 page book so the answer is 379. That leaves B and D. It states she has already read 54 so that eliminates D leaving B. Now let's say we want more proof. It states 28 pages an hour. That means 28h. D doesn't have this either.

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If f(x) = log2 (x + 1), what is f-1(2)? (2 points)
Soloha48 [4]

as you already know, to get the inverse of any expression, we start off by doing a quick switcheroo on the variables, and then solve for "y".

\bf \textit{Logarithm Cancellation Rules} \\\\ log_a a^x = x\qquad \qquad \stackrel{\textit{we'll use this one}}{a^{log_a x}=x} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \stackrel{f(x)}{y}=\log_2(x+1)\implies \stackrel{\textit{quick switcheroo}}{\underline{x}=\log_2(\underline{y}+1)}\implies 2^x=2^{\log_2({y}+1)} \\\\\\ 2^x=y+1\implies 2^x-1=\stackrel{f^{-1}(x)}{y} \\\\[-0.35em] ~\dotfill\\\\ 2^2-1=f^{-1}(2)\implies 3=f^{-1}(2)

3 0
3 years ago
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Please help! It’s late! (One question)
SVETLANKA909090 [29]
Answer: Both

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Then you can read each triangle by what it states. Angle A is congruent to the corresponding angles in the other triangles, which are Q and T. Angle B is congruent to the corresponding angles in the other triangles, which are R and U. Angle C is congruent to the corresponding angles in the other triangles, which are S and V.

We know heard similar since they have congruent angle measures in corresponding spots.
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3 years ago
Which polygon is a base of the triangular prism?
V125BC [204]

A pyramid or triangular prism is a polyhedron that has a base, which can be any polygon, and three or more triangular faces that meet at a point called the vertex.

<u>Explanation:</u>

  • These triangular sides are sometimes called the lateral faces to distinguish them from the base.
  • It is a polyhedron that has a base, which can be any polygon, and three or more triangular faces that meet at a point called the vertex.
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Nana76 [90]

Answer:

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Step-by-step explanation:

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3 years ago
A rectangular pyramid measures three feet by four feet at the base, and has a height of seven feet. Find its volume. A. 21 ft3 B
sweet-ann [11.9K]

Answer:

C. 28 ft³

Step-by-step explanation:

The general formula for the volume of a pyramid:

V = \frac{1}{3}Bh, where B = the area of the base and h = height of the pyramid

Since the base is a rectangle, we can find area using the formula:

A = l x w or A = 3 x 4 = 12 ft²

Using B = 12 and h = 7:

V = \frac{(12)(7)}{3}

V = 28 ft³

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3 years ago
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