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KatRina [158]
3 years ago
8

MATH HELP PLEASE 10 POINTS !

Mathematics
1 answer:
joja [24]3 years ago
7 0
Three times the difference of a number n and 1
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Rachel runs 6 miles in 50 minutes. At the same rate, how many miles would she run in 35 minutes?
Naily [24]

Answer: 4.2 miles

Step-by-step explanation:

So she ran 6 miles in 50 minutes how long will she run in 35 minutes?

So the equation will therefore be:

6=50

x=35

Cross multiply

6 x 35 = 50x

210 = 50x

Divide both sides by 50

The answer is 4.2 miles

5 0
3 years ago
Find f”(x)= (3x^+2)^5<br> 5
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Differentiate the function.

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243

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3 years ago
Which expression is equivalent to 2.3 multiply 2.3 multiply 2.3 multiply 2.3 multiply2.3?
777dan777 [17]

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C 2. 35

Step-by-step explanation:

7 0
3 years ago
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6. Circle all the expressions that are equivalent to this expression: 6p+ 7.
-BARSIC- [3]
Number 4 and 6 are correct because you can only add variables with other variables so that is why 4 and 6 are correct
8 0
3 years ago
Read 2 more answers
Find the surface area of each figure to the nearest tenth.
Stells [14]
For the cylinder on the left-hand-side,

\bf \textit{surface area of a cylinder}\\\\&#10;S=2\pi r(h+r)\quad &#10;\begin{cases}&#10;r=radius\\&#10;h=height\\&#10;------\\&#10;h=10\\&#10;r=5&#10;\end{cases}\implies S=2\pi (5)(10+5)

now, for the triangular prism on the right-hand-side,

notice is really just 2 triangles and 3 rectangles, stacked  up to each other at the edges.

the triangles have a base of 4, and a height of 1.5.

the rectangle on the left and the one on the right is a 6x2.5 rectangle.

the rectangle at the bottom, is a 4x6 rectangle.

adding their areas, is the area of the prism,

\bf \stackrel{two~triangles}{2\left[\cfrac{1}{2}(4)(1.5)  \right]}+\stackrel{left-right~rectangles}{2(6\cdot 2.5)}+\stackrel{bottom~rectangle}{4\cdot 6}&#10;\\\\\\&#10;6~~+~~30~~+~~24
7 0
3 years ago
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