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inysia [295]
3 years ago
8

Emily and Andy each go to a hardware store to buy wire. The table shows the cost y in dollars for x inches of the wire they need

. Emily needs 23 feet of the wire. Andy needs 15 yards of the wire. How much will each of them spend for​ wire?
Mathematics
1 answer:
Arisa [49]3 years ago
6 0

There is no table to look at.

Anyways, to solve for the amount they will spend you will have to do some conversions to switch yards and feet to inches. Additonally, there is also a rate missing which is the cost per inch.

So here is what you’ll have to do…

1. Solve for the slope of the equation

2. See if this linear equation has a y-intercept. It can be done by looking at the table to see where x=0 or by solving using y=mx+b where you substitite the slope for “m” and any coordinate that lies on the graph for “y” and “x” to then solve for “b” which is the y-int.

3. Then write out your equation.

4. Make the conversions

5. Solve for the cost by subtituting the units of measurement into the “x”.

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One of the legs of a right triangle is 9 cm. If the area of the triangle is 225 cm², then the length of the other leg is
ioda

Given:

One of the legs of a right triangle is 9 cm.

The area of the triangle is 225 cm².

To find:

The length of the other leg.

Solution:

The area of a triangle is

Area=\dfrac{1}{2}\times Base\times Height

The area of a right triangle is

Area=\dfrac{1}{2}\times (leg_1)\times (leg_2)

Let x be the length of other leg.

225=\dfrac{1}{2}\times (9)\times (x)

2\times 225=9x

\dfrac{450}{9}=x

50=x

Therefore, the length of the other leg is 50 cm.

4 0
3 years ago
Which statement is true?
Oksi-84 [34.3K]

Answer:

C.

Step-by-step explanation:

A. 39 = 3 × 13; not prime

B. 33 = 3 × 11; not prime

C. 43 = 1 × 43; prime

D. 51 = 3 × 17; not prime

Answer: C.

5 0
2 years ago
Hello, this is math and I need help ❤️ pls and ty ONLY SERIOUS ANSWERS
Greeley [361]

The bicycle with a 30-inches diameter rolls approximately 28.8 more than a tire with the diameter with 21-inches.

<u><em>How to solve:</em></u>

  • First use the formula: C = 3.14d
  • Replace the d value with 30 and solve the equation:

C = 3.14 x 30    ⇒   94.2477796077

  • Then solve the equation again but 21 as the d value:

C = 3.14 x 21     ⇒   65.9734457254

  • Then subtract 65.9734457254 from 94.2477796077 to get the approx. answer of 28.8

3 0
3 years ago
Anybody solve this i made it its easy<br> 3(55x2) + 9 + 44 +88 x 9 = your number + 163593
olga55 [171]

Answer:

165*6+53+792= 990+845 = 1,835

Step-by-step explanation:

4 0
3 years ago
Find a. Round to the nearest tenth.
Kazeer [188]

9514 1404 393

Answer:

  21.8 cm

Step-by-step explanation:

A useful way to write the Law of Sines relation when solving for side lengths is ...

  a/sin(A) = b/sin(B)

Then the solution for 'a' is found by multiplying by sin(A):

  a = sin(A)(b/sin(B)) = b·sin(A)/sin(B)

__

We need to know the angle A. Its value is ...

  A = 180° -75° -31.8° = 73.2°

Then the desired length is ...

  a = (22 cm)sin(73.2°)/sin(75°) ≈ (22 cm)(0.9573/0.9659)

  a ≈ 21.8 cm

_____

I like to use the longest side and largest angle in the equation when those are available. That is why I chose 75° and 22 cm.

6 0
3 years ago
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