3 years ago

In a sale, normal prices are reduced by 10%

Mathematics

1 answer:

monitta3 years ago

8 0

59.4 because if you take off another 10 percent than add double that you get 59.4

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Rita bought 4 rulers for $4.00. If r represents the number of rulers purchased, which equation represents this situation?

Wittaler [7]

Answer: 4r = 4

Step-by-step explanation:

Ruth bought 4 rulers and each ruler is to be represented by r. She therefore bought:

= 4r

She bought these for a total of $4.00 so the equation then becomes:

4r = 4.00

Equation representing situation is: 4r = 4

8 0

2 years ago

What are the solutions of the quadratic equation? 4x^2+34x+60=0

insens350 [35]

Answer:

Option 3) -6,-5/2

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$4x^{2} +34x+60=0$

$a=4\\b=34\\c=60$

substitute in the formula

$x=\frac{-34(+/-)\sqrt{34^{2}-4(4)(60)}} {2(4)}$

$x=\frac{-34(+/-)\sqrt{196}} {8}$

$x=\frac{-34(+/-)14} {8}$

$x_1=\frac{-34(+)14} {8}=-\frac{20}{8}=-\frac{5}{2}$

$x_2=\frac{-34(-)14} {8}=-6$

6 0

3 years ago

Use an array and partial products to find

creativ13 [48]

Well done mate you’re correct.

3 0

3 years ago

translate the sentence into an equation. the sum of 4 times a number and 8 equals 7. use the variable c for the unknown number

jek_recluse [69]

Answer: 4× 8c = 7

Step-by-step explanation:

3 0

3 years ago

I'm lazzzzzzzzy pls answer asap

elena-s [515]

The second one because you times the exponents together

8 0

3 years ago

Read 2 more answers