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Rainbow [258]
3 years ago
9

In the number 11 the 1 in the tens place is ____ the value of the 1 in the ones place

Mathematics
1 answer:
Kryger [21]3 years ago
5 0
Ten times bigger than
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Please help Explanation will be appreciated thanks,
Genrish500 [490]

Answer: A; 6.3%

Step-by-step explanation:

Problem 1

For the first problem, we first want to find y so that we can plug it into the expression.

We can use elimination method for the system of equations to solve.

3x+3y=21

3x-y=5

We subtract both equations to eliminate x.

4y=16                                        [divide both sides by 4]

y=4

Now that we know y, we can plug it into the expression.

\frac{4}{2} -3                                         [divide]

2-3                                         [subtract]

-1

We know that the answer is A.

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

Problem 2

For the second problem, we need to know how to calculate percent error. The formula for precent error is \frac{|measured-exact|}{exact} *100%. We know that the exact value is 80 because the buyer was supposed to given 80. 75 is the measured value because that was what the buyer was given.

\frac{|75-80|}{80} *100%                               [subtract]

\frac{|-5|}{80} *100%                                   [solve absolue value]

\frac{5}{80} *100%                                     [divide]

0.0625*100%                               [multiply]

6.25

Since the problem said to round to one decimal place, we know that the answer is 6.3%.

4 0
2 years ago
Find angle B and angle E
Natali [406]

Answer:

x = 9, Angles are 54°

Step-by-step explanation:

First, we need to find x:

7x-9 = 5x+9

+9 +9

7x = 5x+18

-5x -5x

2x = 18

x = 9

Now, we plug our x value in to find our angles.

5(9) + 9 = 54

Angle B = 54°

7(9) - 9 = 54°

Angle E = 54°

(angles are the same due to AAA property)

6 0
2 years ago
How many vertices does a heptagon have
Olegator [25]
Hey! There are 7 sides and 7 vertices on a Heptagon. Hope this helps!
5 0
3 years ago
Read 2 more answers
HELP PLEASEE:(((((( THANk YOU
alina1380 [7]

Answer:

<em>(C). g(x) = ( </em>\frac{1}{4}<em> x )² </em>

Step-by-step explanation:

The correct answer is <em>(C). g(x) = ( </em>\frac{1}{4}<em> x )²</em>

7 0
2 years ago
What is the reference angle of 255°?​
Vinvika [58]

Answer:

255 degrees is in quadrant 3. The reference angle in this case is the negative x axis to 255 degrees, which is 255 - 180 = 75 degrees

Step-by-step explanation:

6 0
3 years ago
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