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Ira Lisetskai [31]
3 years ago
11

A certain number was multiplied by 4. Then, this product was divided by 19.4. Finally 6.4 was subtracted from this quotient, res

ulting in a difference of -8.4, What was this number?
Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
6 0

Answer:

-9.7

Step-by-step explanation:

we can do the opposite of everything that was done to get the resulting difference

so......

-8.4+6.4=-2

-2x19.4=-38.8

-38.8/4=-9.7

and to double check.......

-9.7x4=-38.8

-38.8/19.4=-2

-2-6.4=-8.4

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ZA and ZB are supplementary angles. If m_A
KatRina [158]

Answer:

∠A = 107

∠B = 73

Step-by-step explanation:

∠A ,  ∠B are supplementary. So, ∠A + ∠B = 180

5x + 27 + 5x - 7 = 180

5x + 5x  + 27 - 7 = 180       {Combine like terms}

             10x + 20=180

                    10x = 180 -20

                   10x = 160

                      x = 160/10

x = 16

∠A = 5x + 27 = 5*16 + 27 = 80 + 27 = 107

∠B = 5x - 7 = 5*16 - 7 = 80 - 7 = 73

5 0
3 years ago
Use the digits 1-7 to crest a seven digit number that can be rounded off to 6,300,000
Ne4ueva [31]
6,277,765 rounds up to 6,300,00
7 0
3 years ago
WILL GIVE BRAINLYIST. HELP
ohaa [14]

Answer:

Both triangles are right triangles because the angle d is 90 degrees in both sides

3 ^ 2 - 2.25^2 = 1.98

4^2 - 1.98^2 = 3.48

x = 3.48

3 0
2 years ago
Read 2 more answers
Ted is making a bread recipe that uses three 1/4 cups of flour and a muffin recipe that uses 2 3/4 cups of flour eggs. How much
wlad13 [49]

Amount of flour used in bread recipe = 3 \frac{1}{4} cups

Amount of flour used in muffin recipe = 2 \frac{3}{4} cups

We have to determine how much more flour is in the recipe.

Since, more amount of flour is used in bread recipe than in muffin recipe.

Total amount of more flour = 3 \frac{1}{4} - 2 \frac{3}{4}

= \frac{13}{4} - \frac{11}{4}

= \frac{2}{4}

= \frac{1}{2}

Therefore, \frac{1}{2} more cup of flour is used in bread recipe than in muffin recipe.

Now, we will determine the total amount of flour used in both recipe.

Total amount of flour used in bread and muffin recipe

= 3 \frac{1}{4} + 2 \frac{3}{4}

= \frac{13}{4} + \frac{11}{4}

=\frac{24}{4}

= 6 cups

Therefore, total 6 cups of flour are used in both the recipes.

3 0
3 years ago
X-3/4 = 2x-9/7<br><br> Please answer it I’ll mark your answer as BRAINLIEST
lidiya [134]
<h3><u>Answer</u> :</h3>

:\implies\sf\:x-\dfrac{3}{4}=2x-\dfrac{9}{7}

:\implies\sf\:\dfrac{9}{7}-\dfrac{3}{4}=2x-x

:\implies\sf\:\dfrac{36-21}{28}=x

:\implies\boxed{\bf{\red{x=\dfrac{15}{28}}}}

7 0
3 years ago
Read 2 more answers
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