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2 years ago

PIC BELOW SOMEONE PLZ HELP....

Mathematics

2 answers:

Citrus2011 [14]2 years ago

6 0

Answer:

C: A line travelling to the right with an open dot on p = -3.

Step-by-step explanation:

You use a closed dot when the equation is greater/less than or equal to: $\geq \leq$

It goes right because if it went left it would be p < -3.

evablogger [386]2 years ago

4 0

Answer:

A line traveling to the right with an open dot on p = -3

(sorry if this isn't right .-.)

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What is the answer to 2x to the power of 2 +x +1=0

KonstantinChe [14]

Answer:

x=-1

Step-by-step explanation:

x+1=0(squared).

x+1=0 (anything raise to the power 0 is 0

collect like terms =x=-1

therefore x=-1

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2 years ago

Find the range of the data set 145, 612, 120, 349, 515, 212, 590.

storchak [24]

Answer:

The biggest - the smallest

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2 years ago

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an isosceles triangle has congruent sides of 20cm. the base is 10cm. find the height of the triangle.

dolphi86 [110]

Answer:

$\large\boxed{A_\triangle=25\sqrt{15}\ cm^2}$

Step-by-step explanation:

Look at the picture.

The formula of an area of a triangle:

$A_\triangle=\dfrac{bh}{2}$

b - base

h - height

We need a length of a height.

Use the Pythagorean theorem:

$leg^2+leg^2=hypotenuse^2$

We have:

$leg=5,\ leg=h,\ hypotenuse=20$

Substitute:

$5^2+h^2=20^2$

$25+h^2=400$ subtract 25 from both sides

$h^2=375\to h=\sqrt{375}\\\\h=\sqrt{(25)(15)}\\\\h=\sqrt{25}\cdot\sqrt{15}\\\\h=5\sqrt{15}\ cm$

Calculate the area:

$A_\triangle=\dfrac{(10)(5\sqrt{15})}{2}=\dfrac{50\sqrt{15}}{2}=25\sqrt{15}\ cm^2$

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3 years ago

Slimpfy 48 show all steps

chubhunter [2.5K]

Divide the number that islf can divide by like 2 or 3 or 4 for exaples

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3 years ago

Use elimination to solve the system

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Just divide the numbers and times them

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