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densk [106]
2 years ago
8

Please answer this multiple choice question correctly for 30 points and brainliest!!

Mathematics
1 answer:
Angelina_Jolie [31]2 years ago
6 0

Answer:

  A.  215x + 780 = 2500

Step-by-step explanation:

Multiply both sides of the equation by 100 to eliminate the decimal fractions.

  (2.15×100)x + 7.8×100 = 25×100

  215x + 780 = 2500

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Yana though of a number she multlipied it by 8 subtracted 4 divided the result by 2 what number did yana think of
Anastasy [175]

Complete Question

Yana though of a number she multiplied it by 8 subtracted 4 divided the result by 2, and got 30. What number did Yana think of

Answer:

x=8

Step-by-step explanation:

From the question we are told that:

Thought of Number x

Multiplied it by 8

 x*8=8x

Subtracted 4

 8x-4

Divided the result by 2

 \frac{8x-4}{2}

Generally the equation for x is mathematically given by

 \frac{8x-4}{2}=30

 8x-4=60

 8x=60+4

 x=8

3 0
2 years ago
On February 11, the temperature was -4 Degrees F in Denver,and in Miami the temperature was 65 Degrees F. How much warmer was it
kow [346]

Answer: 61 degrees warmer

Explanation: 65-4=61

This is because there is a negative and a positive number so you subtract and you get a positive number because In the equation the positive number is larger.

6 0
3 years ago
I need to know the slope of the line given the two points
Karo-lina-s [1.5K]
Slope=(y2-y1)/(x2-x1)
=(4-7)/(2--3)
=3/5

7 0
2 years ago
What is the product of (-1/4) times (-3/7)
weqwewe [10]

Answer:

3/28

Step-by-step explanation:

3 0
3 years ago
Y= 1/2x-4 and y= -2x-9 what is the solution of equations
azamat

Answer:

(x,y)=(-2,-5)

Step-by-step explanation:

y=1/2x-4

y=-2x-9

(y=) 1/2x-4=-2x-9

1/2x +2x=-9+4

1/2x +4/2x=-5

5/2x=-5

5x=-5*2

5x=-10

x=-2

x=-2

y=-2x-9=-2*(-2)-9=4-9=-5

(x,y)=(-2,-5)

8 0
3 years ago
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