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2 years ago

I’m on my post quiz please help!!

Mathematics

1 answer:

grin007 [14]2 years ago

3 0

-5 + -7/8 because the whole thing is supposed to be negative, and if you add any kind of positive it will no longer be -5 7/8

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Can someone help me i dont really get it?

Orlov [11]

Draw out a number line. Plot the values -86, 0 and +45. To go from -86 to 0, you need to travel 86 meters. Then to go from 0 to 45, you need to travel another 45 meters.

In total, you have gone 86+45 = 131 meters (in the up direction)

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2 years ago

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Plane STL and plane Z would intersect at VTX. True or False?

diamong [38]

False i believe i think

5 0

3 years ago

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sarah spent a total of 10 on oranges and apples at the supet market. if she spent 3 dollars less for oranges than she did on app

beks73 [17]

Let's write 2 equations from the two statements given.

Sarah spent 10 dollars on both oranges and apples

Let the price of oranges be "x" and price of apples be "y", thus we can write:

$x+y=10$

Oranges cost 3 less than apples, thus we can say:

$y-3=x$

We can substitute this into the first equation and solve for y:

$\begin{gathered} x+y=10 \\ y-3+y=10 \\ 2y=10+3 \\ 2y=13 \\ y=\frac{13}{2} \\ y=6.5 \end{gathered}$

Thus, let's solve for x now,

$\begin{gathered} x=y-3 \\ x=6.5-3 \\ x=3.5 \end{gathered}$

We want the price of oranges (x), thus,

Price of Oranges = $3.50

3 0

11 months ago

Diameter=10.5 in . Determine the area of each circle. Use 3.14 or 22/7 for pie . Round to the nearest tenth.

zloy xaker [14]

Answer:

86.5 square inches

Step-by-step explanation:

Area of circle: pi*r^2

first find the radius

10.5in /2= 5.25in

find the square

5.25^2=27.5625

multiply with pi

27.5625*3.14=86.54625

rounded 86.5 in

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2 years ago

How do you find the middle term of a perfect square trinomial?

Lyrx [107]

Answer:

Take the square root of the constant (number w/o the variable) and then multiply that by 2.

Step-by-step explanation:

A perfect square trinomial is something like this: $x^{2} +6x+9.$ If I have 6x, and I want to find the last term I would take half a six and then square it to get 9.

SO.... To get the middle term of a perfect square trinomial, you would need to do the reverse.. So...

1) Take the square root of the constant...

2) Multiply that by 2

4 0

3 years ago