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san4es73 [151]
3 years ago
9

Think of a number, double it and then subtract 10, the answer is -27 white an equation and solve

Mathematics
1 answer:
grigory [225]3 years ago
8 0
X - 10 = -27
in order to find x lets subtract -27 minus 10 and we get -17
-17 - 10 = -27 is true and it has infinitely many solutions because of that



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I wasn’t so sure on how to solve this, anyone mind helping me?
sweet-ann [11.9K]

Answer:

Rays: A, B, C, D - 4 rays for each.

Line segments: AB, BD, DC, CA.

7 0
2 years ago
Help, i know the answer but i don’t know how to do the work
Diano4ka-milaya [45]

Answer:

C

Step-by-step explanation:

Using the rule of radicals

\sqrt{a} × \sqrt{b} ⇔ \sqrt{ab}

Simplifying each radical before combining them.

\sqrt{45t}

= \sqrt{9(5t)}

= \sqrt{9} × \sqrt{5t} = 3\sqrt{5t}

-----------------------------------------------------------------------------

\sqrt{125t}

= \sqrt{25(5t)}

= \sqrt{25} × \sqrt{5t} = 5\sqrt{5t}

---------------------------------------------------------------------------

Hence

2(3\sqrt{5t}) - 3(5\sqrt{5t}

= 6\sqrt{5t} - 15\sqrt{5t}

= - 9\sqrt{5t} → C

7 0
3 years ago
The larger of two numbers is 1 less than 3 times the smaller. their sum is 63. find the numbers
dybincka [34]

Your answer would be 5 and 2 :)

7 0
3 years ago
Read 2 more answers
What is the perimeter of a triangle with the given side lengths?
saul85 [17]

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For a triangle, it's the sum of the three side lengths.

I would normally copy them into my answer and then add them up.
But you've set them up in such a beautiful table in the question,
you can just look at that list and add them up.

Add up all the x's :     x + x + x = 3x

Add up all the plain numbers:  -3 + 2 + 4 = 3

There's your perimeter . . . . .  3x + 3 .

5 0
3 years ago
What is the y-value of the vertex of the function f(x) = –(x + 8)(x – 14)?
maxonik [38]

we have

f(x)=-(x+8)(x-14)

Convert to vertex form

f(x)=-(x+8)(x-14)\\f(x)=-( x^{2}-14x+8x-112) \\f(x)=-( x^{2}-6x-112)\\f(x)=-x^{2}+6x+112

we know that

the equation of a vertical parabola in vertex form is equal to

y=a(x-h)^{2} +k

where

(h,k) is the vertex

f(x)=-x^{2}+6x+112

Group terms that contain the same variable, and move the constant to the opposite side of the equation

f(x)-112=-(x^{2}-6x)

Complete the square. Remember to balance the equation by adding the same constants to each side

f(x)-112-9=-(x^{2}-6x+9)

f(x)-121=-(x^{2}-6x+9)

Rewrite as perfect squares

f(x)-121=-(x-3)^{2}

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the vertex is the point (3,121)

therefore

<u>the answer is </u>

The y-value of the vertex is 121

8 0
3 years ago
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