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tresset_1 [31]
3 years ago
6

Jonah is going to the hardware store for his Uncle Frederick. He needs to buy 4 yards of electrical wire and 14 quarts of liquid

nails The store only sells wire by the foot. How many feet does Jonah need? (3 ft = 1 yd)
Mathematics
1 answer:
Cerrena [4.2K]3 years ago
7 0

Answer:

Jonah needs 12 feet of electrical wire.

Step-by-step explanation:

\frac{3 feet}{1 yard}= \frac{x}{4 yards}

cross multiply

12 yard × ft = 1 yard x

12÷1=12

12 feet of wire.

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Solve the system using elimination.<br> 7x - 5y = 26<br> 2x+4y= 2
ella [17]

Answer:

x=3, y=-1. (3, -1).

Step-by-step explanation:

7x-5y=26

2x+4y=2

--------------

simplify 2x+4y=2 into x+2y=1

-------------

7x-5y=26

x+2y=1

-----------------

x=1-2y

7(1-2y)-5y=26

7-14y-5y=26

7-19y=26

19y=7-26

19y=-19

y=-19/19

y=-1

x+2(-1)=1

x-2=1

x=1+2

x=3

3 0
4 years ago
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What is the probability that a randomly selected person is on the swim team? Express the probability as a percent rounded to the
kondor19780726 [428]

Answer:

41.8% is the answer

Step-by-step explanation:

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8 0
3 years ago
X² + 2x-3
EleoNora [17]

Answer:

x4+7x+3

Step-by-step explanation:

6 0
3 years ago
Josiah works at an electronics store as a salesperson. Josiah earns a 2% commission on the total dollar amount of all phone sale
salantis [7]

Answer: the equations are

0.02x + 0.07y = 156

y = 300 + x

Step-by-step explanation:

Let x represent the total dollar amount of phone sales that she makes.

Let y represent the the total dollar amount of computer sales that she makes.

Josiah earns a 2% commission on the total dollar amount of all phone sales he makes, and earns a 7% commission on all computer sales. She earned a total of $156 in commission. This means that

0.02x + 0.07y = 156 - - - - - - - - - - -1

Josiah had $300 more in computer sales than in phone sales. This means that

y = 300 + x

4 0
3 years ago
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The heights of two cylinders are in the ratio 3:1 if the volumes of two are same find the ratio of their respective radii
Soloha48 [4]

Answer:

\sqrt{3} :1

Step-by-step explanation:

Ratio of height of two cylinders are 3:1

Let C2 has the height x

then height of C1 is 3x

Let r1 is the radius of C1

and r2 is the radius of C2

As given that volume of both are equal

Also we know that formula for the volume of the cylinder is

V= π r²h

for C1

V= π (r1)²h

for C2

V=π (r2)²h

As volume of both are same so equating them

π (r1)²h1 = π (r2)²h2

as h1 =3x and h2=x

putting values

π (r1)²(3x) = π (r2)²(x)

cancelling out π and x from both side of the equation

3(r1)²= (r2)²

Taking square root of both sides give

\sqrt{3(r1)^{2} }=\sqrt{(r2)^{2} }

r1 ( \sqrt{3}) = r2

or

r1 : r2 =  \sqrt{3}  :1



7 0
4 years ago
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