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2 years ago

Jose can read 7 pages of his book in 5 minutes.At this rate, how long will it take him to read the entire 175 page book

Mathematics

1 answer:

Naily [24]2 years ago

8 0

$\dfrac{175 \textrm{ pages}}{ \frac{7 \textrm{ pages}}{5 \textrm{ minutes}}} = 125 \textrm{ minutes}$

Answer: 125 minutes

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The math clubs car can travel 9 meters in a second. The race track for the soap box derby is 63 meters long. How many seconds wi

zhenek [66]

Answer: it will take 7 seconds

Step-by-step explanation: 9 x 7 = 63

5 0

2 years ago

Help with 21 would be much appreciated.

umka2103 [35]

Answer:

$\large\boxed{x=2\sqrt{21}\ and\ y=4\sqrt3}$

Step-by-step explanation:

Look at the picture.

ΔADC and ΔCDB are similar. Therefore the sides are in proportion:

$\dfrac{AD}{CD}=\dfrac{CD}{DB}$

We have

$AD=14-8=6\\CD=y\\DB=8$

Substitute:

$\dfrac{6}{y}=\dfrac{y}{8}$ <em>cross multiply</em>

$y^2=(6)(8)$

$y^2=48\to y=\sqrt{48}\\\\y=\sqrt{16\cdot3}\\\\y=\sqrt{16}\ cdot\sqrt3\\\\\boxed{y=4\sqrt3}$

For x use the Pythagorean theorem:

$x^2=6^2+(4\sqrt3)^2\\\\x^2=36+48\\\\x^2=84\to x=\sqrt{84}\\\\x=\sqrt{4\cdot21}\\\\x=\sqrt4\cdot\sqrt{21}\\\\\boxed{x=2\sqrt{21}}$

3 0

2 years ago

The blue figure is a dialation image of the black figure. The labeled point is the center of dilation. Tell wheaten the dilation

algol13

I need a picture of the figures to help with this!

8 0

2 years ago

Read 2 more answers

Triangle abc is similar to triangle qrs. what is the length of rq

aivan3 [116]

If the two triangles are similar, then the corresponding parts of congruent triangles are congruent.

That means that the length of RQ is the same as the corresponding side from triangle ABC.

Hope this helps :)

4 0

2 years ago

My little sister needs help in this and I don't remember.

Anna71 [15]

You have to have the same denominator for both fractions, so I would multiply 3/4 by 3 that would give you 9/12 and the other one is 7/12. This means that the final answer would be 9/12>7/12.

7 0

1 year ago