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3 years ago

15

Which choice describes a question that could be answered by moving the decimal point 3 places to the right? A. dividing 14.09 by

103 B. dividing 14.09 by 102 C. multiplying 14.09 by 100 D. multiplying 14.09 by 1,000

1 answer:

aliya0001 [1]3 years ago

8 0

D. Multiplying 14.09 by 1,000.

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a bag contains 57 coins which are only quarters and dimes the total value of coins is $9.45 how many dimes are in the bag

Digiron [165]

Answer:

There are 32 dimes and 25 quarters.

Step-by-step explanation:

q + d = 57 or q = 57 - d

25q + 10d = 945

substitute first equation into second equation:

25(57 - d) + 10d = 945

1425 - 25d + 10d = 945

-15d = -480

d = -480/-15 = 32

using first equation:

q = 57 - 32 = 25

check using second equation:

25(25) + 10(32) = 945 checks

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3 years ago

9) 337<br>The 3 in the hundreds place is _<br>the value of the 3 in the tens place.

Aliun [14]

Answer:

ten times the value of the 3 in the tens place.

Step-by-step explanation:

I believe that is what your teacher is looking for. 30 times 10 equals 300.

hope this helps !

<3

if this did please consider marking brainliest i would appreciate it

6 0

3 years ago

Make 8 10 times as much

Neporo4naja [7]

80 would be the answer i guess can you explain more in depth?

6 0

3 years ago

What expression can be used for estimating 868 divided by 28

vovangra [49]

Round 28 to nearest ten and 868 to nearest hundred
900 ÷ 30 = 30

7 0

3 years ago

35 solve the following syste

blondinia [14]

Part A: The solution is $(-0.923,5.692)$

Part B: The point $(3,7)$ is not in the solution set.

Explanation:

Part A: The given inequalities are $3 x+4 y>20$ and $x$

The solution can be determined by solving the two inequalities by substitution method.

Changing inequalities to equality, we have,

$x=3 y-18$ and $3 x+4 y=20$

Let us substitute $x=3 y-18$ in the equation $3 x+4 y=20$ , we get,

$3 (3y-18)+4 y=20$

$9y-54+4y=20$

$13y=74$

$y=5.692$

Substituting $y=5.692$ in $x=3 y-18$ , we get,

$x=3 (5.692)-18$

$=17.076-18$

$x=-0.923$

Thus, the solution set is $(-0.923,5.692)$

Part B: Now, we shall determine whether the point $(3,7)$ is in the solution set.

Let us substitute the point $(3,7)$ in the inequalities $3 x+4 y>20$ and $x$ , we get,

$3 (3)+4 (7)>20$

$9+28>20$

$37>20$

Also, substituting $(3,7)$ in $x$ , we get,

$3$

$3$

$3$

Since, the point $(3,7)$ does not satisfy one of the inequality $x$ , the solution set does not contain the point $(3,7)$

Thus, the point $(3,7)$ is not in the solution set.

8 0

3 years ago