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Ilia_Sergeevich [38]
3 years ago
12

What are the two factor of the the quadratic x^2 -10x-39?

Mathematics
1 answer:
VLD [36.1K]3 years ago
4 0

Answer:

(x-13)(x+3)

Step-by-step explanation:

Trinomials are three term algebraic expressions typically featuring variables to exponent powers. To break these trinomials down we factor them using the diamond method or GCF. The diamond method states that for a trinomial ax^2+bx+c multiply a*c then find two numbers which multiply to this number and add to b. When you find those numbers, write them as (x-/+ number)(x-/+number).

x^2-10x-39

a=1, c=-39

ac=-39 and add to b=-10 which -13 and 3 satisfy

(x-13)(x+3)


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What is the standard-form equation of the ellipse shown?
lyudmila [28]
Hello,

(x/6)²+(y/5)²=1
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3 0
3 years ago
Please help
german

Answer:

17 units

Step-by-step explanation:

Distance between points (a,b)\,,\,(c,d) is given by \sqrt{(c-a)^2+(d-b)^2}

The trail starts at P(−2, 2) and goes to Q(5, 2).

Take (a,b)=(-2,2)\,,\,(c,d)=(5,2)

PQ=\sqrt{(5+2)^2+(2-2)^2}=\sqrt{7^2}=7 units

It goes from Q to R(5, −5)

Take (a,b)=(5,2)\,,\,(c,d)=(5,-5)

QR=\sqrt{(5-5)^2+(-5-2)^2}=\sqrt{(-7)^2}=7 units

It goes from R to S.

Take (a,b)=(5,-5)\,,\,(c,d)=(8,-5)

RS=\sqrt{(8-5)^2+(-5+5)^2}=\sqrt{3^2}=3 units

PQ+QR+RS=7+7+3=17 units

4 0
3 years ago
Help please.
Veseljchak [2.6K]
1) multiply price per pound by number of pounds.

1.73/lb * 2.6 pounds= $4.498= $4.50

ANSWER: C) $4.50


2) set up a proportion. 494 is what % out of 520 as x is what out of 100.

$494/$520= x/100
cross multiply
(494*100)= (520*x)
49400= 520x
divide both sides by 520
95%= x

ANSWER: D) 95%

Hope this helps! :)
5 0
3 years ago
Name a dance step and name TWO muscles used during the dance step:
TiliK225 [7]
I don’t know if this would be considered a dance step but an aerial uses your quad because you have to push off your front leg and your hamstring because you have to drive your back leg
6 0
3 years ago
What is the value of x? Enter your answer as a decimal to the nearest tenth in the box. ft
Strike441 [17]

The required value of x in the right-angle triangle is 13.16.

Given that,
In right angle triangle ABC
AB = perpendicular = x ft
Angle C = 47 °
AC = hypotenuse  = 18 ft

<h3>What are trigonometric equations?</h3>

These are the equation that contains trigonometric operators such as sin, cos.. etc.. In algebraic operation.

Here, in the right triangle ABC
sinx = perpendicular  / hypotenuse

sin( 47° ) = AB / AC
0.73 = x / 18
x = 18 * 0.73
x = 13.16

Thus, the required value of x in the right-angle triangle is 13.16.


Learn more about trigonometry equations here:

brainly.com/question/22624805

#SPJ1

6 0
2 years ago
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