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Rashid [163]
4 years ago
8

REALLY NEED ALGEBRA HELP please

Mathematics
1 answer:
lisabon 2012 [21]4 years ago
8 0
A. The discriminant is 81. The formula is b^2 - 4ac.

B. 2 answer and both will be rational due to the fact that the discriminant is a perfect square. 

C. Solutions are 1/2 and -4. You can find using the quadratic formula. 
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In ΔCDE, the measure of ∠E=90°, the measure of ∠D=23°, and EC = 1.3 feet. Find the length of DE to the nearest tenth of a foot.
BabaBlast [244]

Answer: length of DE is about 3.3 ft

Step-by-step explanation:  A calculator is necessary!

DE is the unknown hypotenuse of the triangle

get the sine of 23° = 0.3907311285

Use the equation for sine

<em>sin = o/h</em> .

To find h,  Substitute values for sin and o.  O is EC, Opposite the 23° angle D

<em>0.3907311285 = 1.3/h</em> multiply both sides by h

h(0.3907311285) = 1.3 divide both sides by 0.3907311285

h = 1.3/0.3907311285

3.327096065 = h, the length of the hypotenuse, DE.

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3 years ago
Which state ment is true regarding the graphed function
jek_recluse [69]

Answer:

F(-2)= g(-2)

Step-by-step explanation:

F(-2)= g(-2), both function have the same points of intersect.

5 0
3 years ago
Multiply and simplify: b3 • b • b4 • b2
Luden [163]
Are those supposed to be exponents? When multiplying exponents you add them together

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5 0
3 years ago
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A student builds a model of a race car. The scale is 1:15 in the scale model,the car is 8cm tall. How tall is the actual car?
ycow [4]

Answer: 120cm

Step-by-step explanation i took the test

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2 years ago
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Masteriza [31]

Answer:

y = -x + 2

Step-by-step explanation:

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7 0
2 years ago
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