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3 years ago

4 and 5 please help :)

Mathematics

2 answers:

Triss [41]3 years ago

4 0

Hello! I would love to help! :)

Number 4:

First, let’s find 45% of $37, because we need to see how much to mark up the ball. We can do this by multiplying 45% (0.45) by 37

0.45*37= 16.65

Now, add that number to the original price of the ball to find the retail price.

16.65+37=53.65

So, $53.65 is the answer for number four!

Number 5:

Since you know that the area the sprinkler is spraying is a circle, we can use the formula for areas of circles. That formula is
A=πr^2

Since we know the radius is 8 ft. (I think... the pic cuts it off a little), we can plug that in for r

A=π8^2

You will get
201.0619298297468

Now, round it down to the nearest 100th

201.06

So, 201.06 square feet is your answer for five.

Hope this helps! Comment if you have any questions!

lana [24]3 years ago

3 0

Answer:

16.65

Step-by-step explanation:

question 4 you have to add a zero to 45% so it will look like this. 0.45*37

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alan earns $12.75 more

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3 years ago

Read 2 more answers

Rewrite the function by completing the square (vertex form)<br><br> f(x)=x^2+16x-46

insens350 [35]

Answer:

$\large\boxed{f(x)=(x+8)^2-110}$

Step-by-step explanation:

$\text{The vertex form of equation}\ y=ax^2+bx+c:\\\\y=a(x-h)^2+k\\\\\text{We have the equation:}\\f(x)=x^2+16x-46=x^2+2(x)(8)-46=x^2+2(x)(8)+8^2-8^2-46\\\\\text{use}\ (a+b)^2=a^2+2ab+b^2\to x^2+2(x)(8)+8^2=(x+8)^2\\\\f(x)=(x+8)^2-64-46=(x+8)^2-110$

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2 years ago

Mary is preparing for her birthday party , and she needs to give sweets to all her 10 friends who are invited . To do this , she

hram777 [196]

Answer:

Since each bag has 9strawberries and lemon she gives out 10 strawberries and lemon so she remains with 9 and a quarter bags .

Step-by-step explanation:

Remember each bag contains 9 so she has to pick either one strawberry or a lemon so in the 9th bag she remains with 8 candies.

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2 years ago

Erin calculated the average speed of her most recent run to be 120/16 miles per hour how is this friction expressed as a decimal

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Answer:

$\dfrac{15}{2}$

Step-by-step explanation:

The average speed of the Erin is 120/16 mph

Here,

Numerator = 120

Denominator = 16

mph = miles per hour

We need to find an expression expressed as a decimal.

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So, the final answer is $\dfrac{15}{2}$ .

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3 years ago

Kevin runs a farm stand that sells apples and raspberries. Each pound of apples sells for $3.50 and each pound of raspberries se

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Kevin sold 10 pounds of apples and 20 pounds of raspberries.

Step-by-step explanation:

Given,

Cost per pound of apples = $3.50

Cost per pound of raspberries = $4

Total amount earned = $115

Let,

x represent the pounds of apples sold

y represent the pounds of raspberries sold

According to given statement;

3.50x+4y=115 Eqn 1

y = 2x Eqn 2

Putting value of y from Eqn 2 in Eqn 1

$3.50x+4(2x)=115\\3.50x+8x=115\\11.50x=115$

Dividing both sides by 11.50

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Putting x=10 in Eqn 2

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Kevin sold 10 pounds of apples and 20 pounds of raspberries.

Keywords: linear equation, substitution method

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago