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3 years ago

10

The product of a number and -2/3 is -9/10 (20 Points) What is the number?

2 answers:

poizon [28]3 years ago

8 0

Answer:

$\large\boxed{n=\dfrac{27}{20}}$

Step-by-step explanation:

$\text{Let}\ n\ \text{is a number.}\\\\\text{The product of a number and}\ -\dfrac{2}{3}\ \text{is}\ -\dfrac{9}{10}:\\\\-\dfrac{2}{3}\cdot n=-\dfrac{9}{10}\\\\-\dfrac{2n}{3}=-\dfrac{9}{10}\qquad\text{change the signs}\\\\\dfrac{2n}{3}=\dfrac{9}{10}\qquad\text{cross multiply}\\\\(2n)(10)=(3)(9)\\\\20n=27\qquad\text{divide both sides by 20}\\\\\dfrac{20n}{20}=\dfrac{27}{20}\\\\\boxed{n=\dfrac{27}{20}}$

Lana71 [14]3 years ago

3 0

Answer:

1 7/20

Step-by-step explanation:

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Olivia baked 45 mini-loaves of banana bread to be sliced for snacks at a craft fair. She will place an equal number of loaves in

allochka39001 [22]

Answer:

7 whole loaves of bread.

Step-by-step explanation:

Since there are total of 6 locations and each location needs to have the same number of whole loaves of bread we simply need to divide the number of mini-loaves of banana bread by the number of locations like so...

45 / 6 = 7.5

As we can see by the mathematical expression above 45 loaves of bread can be divided into 6, giving each location 7.5 loaves of bread but since each location needs only whole loaves then that would mean that each location would get 7 whole loaves of bread.

8 0

2 years ago

2 3/4+3 5/8 simplified

otez555 [7]

$2\frac{3}{4}+3 \frac{5}{8}=6\frac{3}{8}$

Solution:

Given expression is $2\frac{3}{4}+3 \frac{5}{8}$ .

To simplify the expression $2\frac{3}{4}+3 \frac{5}{8}.$

Let us first convert the mixed fraction into improper fraction.

$2\frac{3}{4}+3 \frac{5}{8}=\frac{(2\times 4) + 3}{4}+ \frac{(3 \times 8)+5}{8}$

$=\frac{8+ 3}{4}+ \frac{24+5}{8}$

$=\frac{11}{4}+ \frac{29}{8}$

Take LCM for the denominators (LCM of 4, 8 = 8) and make the same.

$=\frac{11\times2}{4\times 2}+ \frac{29\times1}{8\times1}$

$=\frac{22}{8}+ \frac{29}{8}$

$=\frac{51}{8}$

Now, divide 51 by 8 and again write it in the mixed fraction.

$=6\frac{3}{8}$

$2\frac{3}{4}+3 \frac{5}{8}=6\frac{3}{8}$

Hence, the simplified answer is $6\frac{3}{8}$ .

7 0

3 years ago

Help pls *giving brainliest*

MatroZZZ [7]

Answer:

Don't worry! This is not that hard! You got this! You can use this for checking :)

Plus we have to use x-y and use the numbers given for each question

15. x-y if x=6 and x=-3

6-(-3) negative plus negative equals positive

6+3= 9

16. x= -7 x=1

-7-1= -8

17. x=-2 y=-6

-2-(-6) negative plus negative equals positive

-2+6= 4

18. x=9 y=11

9-11= -2

19. x=-1 y=-1

-1-(-1)

-1+2= 1

20. x=-5 y=5

-5-5= -10

21. The high temp. is 6 and the low temp. is -3 It sasking for the differnece between the two.

6-(-3)

6+3=9

The difference between the high temp. and low temp. is 9 degrees Fahrenheit

22. This question is a little tricky but don't worry!

From -7 to 7. To reach -7 to 0, that is 7 degrees. To reach 7 from 0, that is also 7 degrees. So you add 7 and 7!

7+7= 14

The temperature increased 14 degrees Fahrenheit.

Hope this helps! Good luck on your quiz and I hope you pass :)

3 0

3 years ago

Please show work thanks!

Ainat [17]

Masha's speed was 4 km/h

5 0

3 years ago

Read 2 more answers

krok68 [10]

<h3>#29</h3>

<u>Find the value of x:</u>

7x - 2 = 55 + 4x (as corresponding angles)
7x - 4x = 55 + 3
3x = 57
x = 19

<u>Find the value of y:</u>

y = 7x - 2 (as alternate exterior angles)
y = 7*19 - 2
y = 131

<h3>#30</h3>

<u>Find the value of x:</u>

14x - 34 = 9x + 1 (as alternate interior angles)
14x - 9x = 1 + 34
5x = 35
x = 7

<u>Find the value of y:</u>

y + (9x + 1) = 90 (as complementary angles)
y = 90 - 9*7 - 1
y = 26

4 0

2 years ago