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3241004551 [841]
3 years ago
8

Equation seven times a number is 28

Mathematics
2 answers:
allochka39001 [22]3 years ago
8 0
4 is the answer 7x4=28
balu736 [363]3 years ago
6 0
7n=28
Divide by 7 on both sides
n=4
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Plz help me with this
Diano4ka-milaya [45]

A is 95t+25.  This is the simplest form, but the way you do it is that 25t+15+20t+10+50t=9t+25.


6 0
3 years ago
Y−3=2(x+1) solve this
Elena-2011 [213]

Answer:

Y-3 = 2(x+1)

open the brackets

Y-3 = 2x+2

Y = 2x+5..... this is the answer when solving for Y

if were solving for x:

Y-3 = 2x+5

Y-8 = 2x

\frac{y}{2} -4 = x

8 0
3 years ago
9 unit percent change is 23, what is the 19th unit percent cahnge?
vichka [17]

Answer:

42.40705%

Step-by-step explanation:

(1 - (23/100)^(19/9) = 1 + r/100

0.57593 = 1 + r/100

r = 42.40705%

6 0
2 years ago
I will mark you as brainliest if you're answer is correct​
GalinKa [24]

Answer:

perimeter = 28.13 cm

Step-by-step explanation:

Calculate the length of a line drawn from A to C.

sin 85 = b/8, b = 7.97

cos 85 = c/8, c = 0.697

AC² =7.97² + (6 + 0.697)² = 63.52 + 44.85 = 108.37

AC = 10.41

Now you have a right triangle ADC with a known hypotenuse and  one leg.

Using the Pythagorean theorem:

DC² = 10.41² - 5²

DC² = 108.37 - 25 = 83.37

DC = 9.13 cm

perimeter = 5 + 6 + 8 + 9.13 = 28.13 cm

8 0
2 years ago
When can you simplify ratios​
riadik2000 [5.3K]

Answer:

you can simplify rations just like you simplify fractions. Whenever you are able to evenly divide both parts of the ratio with out changing the equation's answer, you are able to.

for example

if it were 3:6, you can simplify this by dividing these both by 3, leaving you with 1:2.

4 0
3 years ago
Read 2 more answers
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