3 years ago

Write an expression that is equivelant to 4 + 3 (5+×)

Mathematics

1 answer:

Yuliya22 [10]3 years ago

6 0

The answer is 3+4(5+x).

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the frame of a picture is 28 cm by 32 cm outside and is of uniform width.What is the width of the frame if 192 cm2 of the pictur

natita [175]

Answer:

The width of the frame is equal to $8\ cm$

Step-by-step explanation:

Let

x-------> the width of the frame picture

we know that

$(28-2x)(32-2x)=192$

$896-56x-64x+4x^{2} =192$

$4x^{2}-120x+704=0$

Simplify

$x^{2}-30x+176=0$

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

$x^{2}-30x+176=0$

$a=1\\b=-30\\c=176$

substitute in the formula

$x=\frac{30(+/-)\sqrt{(-30)^{2}-4(1)(176)}} {2(1)}$

$x=\frac{30(+/-)\sqrt{196}} {2}$

$x=\frac{30(+/-)14} {2}$

$x=\frac{30+14} {2}=22\ cm$ ----> this solution is not logic

$x=\frac{30-14} {2}=8\ cm$

The width of the frame is equal to $8\ cm$

8 0

3 years ago

Which of the following is an example of a quadratic equation?

jasenka [17]

Answer:

C) any eqaution that has a variable or number squared is a qaudratic equation

5 0

3 years ago

530 : 34 =?<br> Write your answer as a whole number and remainder.

Scorpion4ik [409]

168 and 7 as remainder

3 0

3 years ago

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Solar panel generates 3/5 of kilowatts of power a warehouse wants to generate 24 kilowatts of power write an expression to find

Anuta_ua [19.1K]

Answer:

The warehouse will need 40 solar panels

Step-by-step explanation:

3/5 kilowatts is generated by 1 solar panel

24 kilowatts will be generated by ?

24 ÷ 3/5 = (24×5)/3 = 120/3 = 40 solar panels.

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3 years ago

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Last year, Bob used 10 bottles of shampoo and 8 bottles of conditioner. His sister, Kayla, used 7 bottles of shampoo and 6 bottl

REY [17]

The lower ratio would be bob and that dude need to slow down the hair stuff

10 to 8 ratio is about 8.00
7 to 6 ratio is about 9.00

im not to good at math so dubble cheek just in case hope i could help tho

rip my spelling

6 0

3 years ago