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Alona [7]
3 years ago
13

Solve x^2 – 10x = -21

Mathematics
1 answer:
emmasim [6.3K]3 years ago
8 0

Answer:

Step-by-step explanation: x^2-10x+21=0

(x-7)(x-3)

x = 3,7

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please help me i suck at math and really need help i know u probly dont care lol but i need help below
sergiy2304 [10]
The equation of the line is C. 1X/2 -2
How you figure this out is you first say when x is zero y is what?
y= 1/2 (0) - 2
You would then see that y=-2 (0,-2)
Plot that point
Next you need to find the slope of the line.
Remember slope is rise over run.
When you 'rise' up one (from -2) and 'run' 2
you are now at the point (2,-1) which is on the line. 
You can continue doing rise/run along the line to check your answer. 
I hope this makes sense! Let me know if you have any questions :)

8 0
3 years ago
If you guys can figure this out ur a genius
baherus [9]

Answer:

252 ft squared

Step-by-step explanation:

Since the radius of the circle is 3, then the diameter would be 6

Split the rectangle into 3

The way I split the shape is like the picture attached (with the blue lines).

Find the area of each rectangle which can be easily found by using the diameter of each circle (picture attached with black lines)

6*18=108

6*12=72

6*12=72

Add the areas of each rectangle.

108+72+72=252

7 0
3 years ago
If y is 9 and x is 12, what additional information is necessary to show that triangle DUM is congruent to triangle MAP using the
Law Incorporation [45]
                         Δ DUM         Δ MAP

hypotenuse:      15                2y-3
short leg:             12                0.5x + 6

y = 9 ⇒ 2(9) - 3 = 18 - 3 = 15 Congruent with the hypotenuse of Δ DUM
x = 12 ⇒ 0.5(12) + 6 = 6 + 6 = 12 Congruent with the short leg of Δ DUM

SAS postulate states that two triangles are congruent if 2 of its sides and 1 angle have equal measure. Both the hypotenuse and short leg are equal in measure. Thus, both triangles are congruent with each other.
6 0
3 years ago
Corey went shopping and bought a pair of shoes for $65.99 and two caps for $15.99 each. If he was charged a sales tax of 8%, the
RUDIKE [14]

Answer:

It’s 105

Step-by-step explanation:

6 0
3 years ago
Which are vertical angles?
miv72 [106K]
Vertical angles are angles opposite each other where two lines cross
5 0
3 years ago
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