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2 years ago

Multiple choice about how many seconds the ball is in the air

Mathematics

1 answer:

Brilliant_brown [7]2 years ago

7 0

Answer:the answer might be a I might be wrong sry if I am

Step-by-step explanation:

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On the first math test, Keiko answered 19 out of 20 correct. On which test did she get a better grade? Write a ratio in faction

frosja888 [35]

The fraction for is 19/20

3 0

3 years ago

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Question 7: Help Me Please

ehidna [41]

Answer:

m∠UQT = 52°
m∠UTQ = 42°
x = 1

Step-by-step explanation:

∠UQT is an alternate interior angle of ∠RSQ

Therefore, ∠UQT is 52°

∠UTQ is an alternate interior angle of ∠URS

Therefore, ∠UTQ is 42°

The diagonals of a parallelogram are congruent, so 4x + 1 is 5

4x + 1 = 5
4x = 4
x = 1

-Chetan K

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3 years ago

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WHAT IS THE DECIMAL FORM FOR 7 x 10 + 9 x (1/10) + 2 x (1/100) + 5 x (1/000)

max2010maxim [7]

Answer:

70.925 I believe

Step-by-step explanation:

6 0

3 years ago

A plumber charges a $45 fee to make a house call and then $25 for each hour of labor. The plumber uses an equation in the form

musickatia [10]

Answer:

$25

Step-by-step explanation:

b= 45

x= number of hours

y= amount charged

3 0

3 years ago

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A metallurgist has one alloy containing 32% copper and another containing 65% copper. How many pounds of each alloy must he use

kompoz [17]

Answer:

<h2>30.67 pounds of 32% copper alloy and 10.33 pounds of 65% copper alloy</h2>

Step-by-step explanation:

First alloy contains 32% copper and the second alloy contains 65% alloy.

We wish to make 44 pounds of a third alloy containing 42% copper.

Let the weight of first alloy used be $x$ in pounds and the weight of second alloy used be $y$ in pounds.

Total weight = $44\text{ }pounds=x+y$ $-(i)$

Total weight of copper = $42\%\text{ of 44 pounds = }32\%\text{ of }x\text{ pounds + }65\%\text{ of }y\text{ pounds }$

$\dfrac{42\times 44}{100}=\dfrac{32x}{100}+\dfrac{65y}{100}\\\\ 32x+65y=1848$ $-(ii)$

Subtracting 32 times first equation from second equation,

$32x+65y-32x-32y=1848-32\times44\\33y=440\\y=13.333\text{ }pounds \\x=30.667\text{ }pounds$

∴ 30.67 pounds of first alloy and 13.33 pounds of second alloy were used.

4 0

3 years ago