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SpyIntel [72]
2 years ago
14

Evaluate 1/4c + 3d when c = 6 and d = 7

Mathematics
2 answers:
maxonik [38]2 years ago
7 0

Answer:

22 1/2

Step-by-step explanation:

1/4×6=1 1/2

3×7=21

21+1 1/2=22 1/2

nataly862011 [7]2 years ago
3 0

Answer as a decimal = 22.5

Answer as a fraction = 45/2

===========================================================

Explanation:

Replace c with 6, and replace d with 7.

Then use the order of operations (PEMDAS) to simplify until you get a single number.

\frac{1}{4}c + 3d\\\\\frac{1}{4}(6) + 3(7)\\\\\frac{6}{4} + 21\\\\1.5 + 21\\\\22.5\\\\

If you want to convert this to an improper fraction, then,

22.5 = 22 + 0.5\\\\22.5 = 22 + \frac{1}{2}\\\\22.5 = 22*\frac{2}{2} + \frac{1}{2}\\\\22.5 = \frac{44}{2} + \frac{1}{2}\\\\22.5 = \frac{44+1}{2}\\\\22.5 = \frac{45}{2}\\\\

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Given:

A surf instructor has an initial fee of $12 and charges $8  per hour for lessons.

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The y-intercept and its location on the graph.

Solution:

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Let the total fee be y for x hours. Then,

y=12+8x

Put x=0, to find the y-intercept.

y=12+8(0)

y=12+0

y=12

Therefore, the y-intercept is 12.

Table of values for y=12+8x,

x        y

0       12

-1       4

Plot (0,12) and (-1,4) on a coordinate plane and connect them by a straight line.

Clearly, the y-intercept is located at (0,12).

7 0
3 years ago
There were 9500 spectators at a football match. 6375 of them were men. Of the remaining spectators, there were 4 times as many c
jek_recluse [69]
X=# of women

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3 0
3 years ago
Teri incorrectly solved the system of equations below. Correctly identify the error Teri made. 2x - 10 y = -30 x - 5y = 20 Step
umka21 [38]

Answer:

See explanations below

Step-by-step explanation:

Given the system of equation

2x - 10 y = -30 ... 1

x - 5y = 20 ... 2

Step: From 2;

x = 20 + 5y ...3

Step 2: Substitute equation 3 into 1

2x - 10y = -30

2(5y+20) - 10y = -30

Open the bracket

10y + 40 - 10y = -30

10y - 10y + 40 = -30

0+40 = -30

40 = -30

The steps taken by Teri are correct all through. He didn't make any error whatsoever

3 0
2 years ago
7. Write the following proportion: 8 is to 64 as 2 is to X
Paul [167]
2 is to 4 because 64/8 is 8. 4/2 is 2. 2 x 2 is in proportion to 8 x 8
4 0
3 years ago
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Help with 694 = x10<br><br> and its says write it in scientific notation
nikitadnepr [17]

Answer:

a = 6.94

b = 2

Now the whole thing:

6.94 x 102

Check your work:

102 = 100 x 6.94 = 694


Hope this helped!!!

~BBGLUVER


7 0
3 years ago
Read 2 more answers
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