Need help answering these two questions

Mathematics

1 answer:

Nat2105 [25]3 years ago

7 0

3.55 for number 16.

Add up the x and z then take that sum and subtract it from the original amount.

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t takes about 14 person-hours of labor to break up a driveway and clear away the rubble. It takes about 8 person-hours of labor

Ostrovityanka [42]

For this case what you must do is add the number of hours to perform the different activities.
We have then:
14 person-hours of labor to break up to driveway and clear away the rubble.
8 person-hours of labor to pour and smooth concrete for the new driveway.
Adding both activities we have
14 + 8 = 22
answer
it takes to break up to driveway, clear away the rubble, pour the concrete, and smooth the concrete about 22 person-hours of labor

4 0

3 years ago

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Kim saved $25 in 9 weeks. At that rate, how long will it take Kim to save $175?

Simora [160]

Answer:

it would take 63 weeks to save that much money

Step-by-step explanation:

divide 25 by 9 and get 2.7 then multiply 2.7 by 63 to get 175

3 0

3 years ago

A dice is rolled, then a coin is tossed.what is the probability of getting 5 then tails?

ivanzaharov [21]

Getting a 5 = 1/6
Getting tails = 1/2

1/6 * 1/2 = 1/12

7 0

3 years ago

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Find the surface area of each solid figure

nasty-shy [4]

Answer:

Step-by-step explanation: i cant help if you dont give the question:)

7 0

4 years ago

lyudmila [28]

${\large{\textsf{\textbf{\underline{\underline{Given :}}}}}}$

★ ∆ ABC is similar to ∆DEF

★ Area of triangle ABC = 64cm²

★ Area of triangle DEF = 121cm²

★ Side EF = 15.4 cm

${\large{\textsf{\textbf{\underline{\underline{To \: Find :}}}}}}$

★ Side BC

${\large{\textsf{\textbf{\underline{\underline{Solution :}}}}}}$

Since, ∆ ABC is similar to ∆DEF

[ Whenever two traingles are similar, the ratio of the areas of two similar triangles is equal to the square of the ratio of their corresponding sides. ]

$\therefore \tt \boxed{ \tt \dfrac{area( \triangle \: ABC )}{area( \triangle \: DEF)} = { \bigg(\frac{BC}{EF} \bigg)}^{2} }$