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3 years ago

Shirt: $7; 50% discount

Mathematics

2 answers:

iVinArrow [24]3 years ago

8 0

Answer: yeah jadhdkdkdkdje

Alex777 [14]3 years ago

3 0

Wait i don’t get it can you explain more?:)!

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Need help me please don't know this

motikmotik

Answer:

c.9

the correct answer

semoga jawapan ini membantu

8 0

2 years ago

Read 2 more answers

Of the numbers listed below, which are not multiples of 4? 2,4,7,8,12,15,19,24,34

sashaice [31]

7,15,19,34 are not multiples of four. to find this answer out just divide four into them.

6 0

2 years ago

Read 2 more answers

A car is traveling at a speed of 79 feet per second. (a) what is its speed in kilometers per hour?

AysviL [449]

79 ft/s = 0.0240792 km/s

0.0240792 x 60 = 1.444752 km/minute
1.444752 x 60 = 86.68512 km/hour

Ans: 86.69 km/h

6 0

3 years ago

Select all the expressions that are rational numbers.

fredd [130]

..........The answer is D

3 0

2 years ago

The sum of three numbers is 8. The third is 9

Ierofanga [76]

Answer:

→ First value is 1

→ Second value is 2

→ Third value is 5

Step-by-step explanation:

• let numbers be x, y and z

${ \tt{z = 8y - 9 - - - (eqn \: 1)}} \\ \\ { \tt{10x = 8y - 7 - - - (eqn \: 2)}} \\ \\ { \tt{x + y + z = 8 - - - (eqn \: 3)}}$

• from eqn 2, make x the subject:

${ \tt{x = \frac{8y - 7}{10} }} \\$

• substitute all variables in eqn 3:

${ \tt{ \frac{8y - 7}{10} + y + 8y - 9 = 8}} \\ \\ { \tt{8y - 7 + 10y + 80y - 90 = 80}} \\ \\ { \tt{98y = 177}} \\ \\ { \boxed{ \tt{ \: y = 1.8}}}$

• find z

${ \tt{z = 8y - 9}} \\ \\ { \tt{z = 8(1.8) - 9}} \\ \\ { \tt{z = 14.4 - 9}} \\ \\ { \boxed{ \tt{ \: z = 5.4 \: }}}$

• find x:

${ \tt{x = \frac{8(1.8) - 7}{10} }} \\ \\ { \tt{x = \frac{7.4}{10} }} \\ \\ { \boxed{ \tt{ \: x = 0.74 \: }}}$

Rounding to nearest value:

${ \boxed{ \rm{x = 1}}} \\ { \boxed{ \rm{y =2 }}} \\ { \boxed{ \rm{z = 5}}}$

7 0

2 years ago

Shirt: $7; 50% discount​

Shirt: $7; 50% discount