3 years ago

HELPPP PLEASE!!!

Mathematics

1 answer:

steposvetlana [31]3 years ago

6 0

Answer:

A: 243.2 B: 1740 C: 42.8

Step-by-step explanation:

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What is the intermediate step in the form (x+a)^2=b(x+a)

icang [17]

Answer:

Step-by-step explanation:

x²+2 ×x×5+5²=-20x+2×x×5-3

(x+5)²=-20+10x-3

(x+5)²=-10x-3

3 0

3 years ago

If y varies directly as x, and y is 20 when x is 4, what is the constant of variation for this relation?

yuradex [85]

Y
y=ax
where a is a constant of proportionality;
y=20, x=4
20=4a
a=20/4
a=5
y=5x
The constant of variation is 5

3 0

3 years ago

a line has a slope of -2 and includes the points (-1,r) and (2,4). write the value of r in the empty box

guajiro [1.7K]

Answer:

r= 10

Step-by-step explanation:

4 0

3 years ago

The measure of the angles of a triangle is 35. The sum of the measures of the other two angles is 145 and the difference between

Vitek1552 [10]

Let x and y represent the measure of the unknown angles
x+y=145
x-y= 15
2x=160 (Use the elimination. method)
2/2x=160/2
x=80
80° is the measure of one of the unknown angles
x+y=145
80+y=145
-80 -80
y=65
The measure of the second unknown angle is 65°

Thus the measure of the unknown angles are 80° and 65°

8 0

3 years ago

Solve using quadratic formula<br> 5x^2-4x+3=0

Semenov [28]

Answer:

Impossible

Step-by-step explanation:

In 5x^2-4x+3=0, standard form, substitute these values in the quadratic formula:

a = 5; b = -4; c = 3

The quadratic formula is $x = \frac{ -b ± \sqrt{b^{2} - 4ac}}{2a}$