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3 years ago

6

Sarah is wrapping the rectangular prism box for her Valentine. She calculated how many square meters of wrapping paper she would

need. Explain her error and give the correct amount of wrapping paper she would need.

1 answer:

AnnyKZ [126]3 years ago

7 0

Answer:

She probably was supposed to multiply, instead of add.

Step-by-step explanation:

First multiply 24 and 32, which is 768.

Second multiply 768 and 12, which is 9216

9216 is the answer.

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28 is 35% of what number?

Fofino [41]

28 is 35% of 80

Convert the percentage (35) into a decimal by dividing it over 100:
$\frac{35}{100} = 0.35$

Divide 28 over 0.35:
$\frac{28}{0.35} = 80$

7 0

3 years ago

Read 2 more answers

. Which of the following quartic functions has x = -2 and x=-3 as its only two real zeros?

LenKa [72]

If you are looking for the equation, I’m pretty sure it would be x^2 + 5 + 6. 2 x 3 is 6 and 2 + 3 is 5 so if you factored it out it would be (x + 2) (x + 3). This would mean that your zeroes would be -2 and -3.

6 0

3 years ago

valina [46]

Answer:

$(10, 0)$

Step-by-step explanation:

Let's try all the options:

$\left \{ {{2x + y = 20} \atop {4x-2y = 40} \right.$

Considering $(10, 0)$ :

$$\left \{ {{2(10) + 0 = 20} \atop {4(10)-2(0) = 40} \right. $\\$

$\left \{ {{20 + 0 = 20} \atop {40-0 = 40} \right.$

$\left \{ {{20= 20} \atop {40 = 40} \right.$

Considering $(0, 10)$ :

$$\left \{ {{2(0) + 10 = 20} \atop {4(0)-2(10) = 40} \right. $\\$

$\left \{ {{0 + 10 = 20} \atop {0-20 = 40} \right.$

$\left \{ {{10= 20} \atop {-20 = 40} \right.$

$\left \{ {{10\neq 20} \atop {-20 \neq 40} \right.$

Considering $(4, 2)$ :

$$\left \{ {{2(4) + 2 = 20} \atop {4(4)-2(2) = 40} \right. $\\$

$\left \{ {{8 + 2 = 20} \atop {8-4 = 40} \right.$

$\left \{ {{10= 20} \atop {4 = 40} \right.$

$\left \{ {{10\neq 20} \atop {4 \neq 40} \right.$

Considering $(10, -10)$ :

$$\left \{ {{2(10) -10 = 20} \atop {4(10)-2(-10) = 40} \right. $\\$

$\left \{ {{20 -10 = 20} \atop {40+20 = 40} \right.$

$\left \{ {{10= 20} \atop {60 = 40} \right.$

$\left \{ {{10\neq 20} \atop {60 \neq 40} \right.$

7 0

3 years ago

Explain the difference between an equation, like x=5, and an inequality, like x_> 5.

andrew11 [14]

X=5 is a definite answer and one solution. While X greater than OR equal to 5 means that it could be 5 AND anything above 5, which gives multiple of choices for solutions. (I believe this write but it’s been awhile since I did algebra stuff)

7 0

4 years ago

Kevin and monica lead visitor tours at a museum. Last month, both kevin and monica led the same number of vistors. Kevin lead 15

kiruha [24]

Answer:

Number of students in each group = 8

Step-by-step explanation:

kevin and monica led the same number of vistors.

Let x = number of students in each group

Kevin lead 150 adults, plus 6 student groups.

150 + 6x

Monica led 134 adults, plus 8 student groups.

134 + 8x

Equate both equations

150 + 6x = 134 + 8x

Collect like terms

150 - 134 = 8x - 6x

16 = 2x

Divide both sides by 2

x = 16 / 2

= 8

x = 8

Number of students in each group = 8

3 0

3 years ago