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3 years ago

8

Please help me out with how to solve this

1 answer:

ikadub [295]3 years ago

4 0

9514 1404 393

Answer:

51

Step-by-step explanation:

Your score total must be 3×75 = 225. Subtracting the two high scores gives ...

225 -95 -79 = 51

__

The score of 34 is below that value, so it is the one that will be dropped.

You need a test score of 51 on the next test for your average to be 75.

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judy has a piece of wood that is 4 5/8 feet long. she cuts off 3 feet 6 inches of the wood for a project. how much wood, in feet

Svet_ta [14]

there are 12 inches in 1 foot, so 6 inches is really just half a foot, thus 3'6" is really just 3.5' or 3½ feet.

now, let's convert those mixed fractions to improper fractions and then subtract, bearing in mind our LCD will be 8.

$\bf \stackrel{mixed}{4\frac{5}{8}}\implies \cfrac{4\cdot 8+5}{8}\implies \stackrel{improper}{\cfrac{45}{8}}~\hfill \stackrel{mixed}{3\frac{1}{2}}\implies \cfrac{3\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{7}{2}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{45}{8}-\cfrac{7}{2}\implies \stackrel{\textit{using the LCD of 8}}{\cfrac{(1)45~~-~~(4)7}{8}}\implies \cfrac{45-28}{8}\implies \cfrac{17}{8}\implies 2\frac{1}{8}$

6 0

3 years ago

Read 2 more answers

Line segments JK and JL in the xy-coordinate plane both have a common endpoint J(-4,11) and midpoints at M, (2, 16) and M2 (-3,5

ohaa [14]

Answer:

12.1

Step-by-step explanation:

We use the formula for the distance between two arbitrary points $(x_1,y_1)$ and $(x_2,y_2)$ in the xy-coordinate plane, that is:

$d=\sqrt{(x_1-x_2)^2 + (y_1-y_2)^2}$

So, replacing the points $M=(2,16)$ and $M_2=(-3,5)$ , we obtain:

$d=\sqrt{(2-(-3))^2 + (16-5)^2}\\d=\sqrt{(2+3)^2 + (16-5)^2}\\d=\sqrt{5^2 + 11^2}\\d=\sqrt{146 }=12.083045... \simeq 12.1$

that is the answer.

note: observe that we only use the coordinates between the two midpoints and not the point J.

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3 years ago

It is cloudy outside. What is the first step of indirectly proving this statement?

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4 years ago

Determine whether this mapping diagram is a function or not

lidiya [134]

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Step-by-step explanation:

Two inputs reach the same output.

6 0

3 years ago

olya-2409 [2.1K]

Here's the solutions :

1. solve for a :

$4a = 20$

$a = \dfrac{20}{4}$

$a = 5$

2. solve for y :

$3y + 9 = 24$

$3y = 24 - 9$

$3y = 15$

$y = \dfrac{15}{3}$

$y = 5$

3. solve for y :

$\dfrac{y}{3} - 5 = 4$

$\dfrac{y}{3} = 5 + 4$

$\dfrac{y}{3} = 9$

$y = 9 \times 3$

$y = 27$

4. solve for k :

$3 = 9 - 4k$

$3 - 9 = -4 k$

$- 6 = - 4 k$

$k = \dfrac{ - 6}{ - 4}$

$k = \dfrac{3}{2} \: \: \: or \: \: 1.5$

5. there's something wrong with this question.

6. solve for x :

$3x + 8 = 2$

$3x = 2 - 8$

$3x = - 6$

$x = \dfrac{ - 6}{3}$

$x = - 2$

i hope it helped...

6 0

3 years ago

Read 2 more answers