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TiliK225 [7]
2 years ago
13

What’s the answer?????

Mathematics
1 answer:
jeka57 [31]2 years ago
5 0
The answer will be narrow
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I need help with math 1010<br>completing the square<br>x^2-9x=10
Citrus2011 [14]
x^2-9x=10|+20.25\\&#10;x^2-9x+20.25=30.25\\&#10;(x-4.5)^2=30.25\\&#10;x-4.5=5.5 \vee x-4.5=-5.5\\&#10;x=10 \vee x=-1
7 0
2 years ago
75 is what percent of 60
VLD [36.1K]
75 is 125% of 60. Hope this helps! :)
7 0
3 years ago
Each year, Kipp raises money by participating in the Walk for Breast Cancer. Last year, Mr. Madrid walked at a pace of 12 miles
Ilia_Sergeevich [38]
A.

The rate is 12:2

B.

Set up a proportion:

12/2 = x/5

Multiply 5 to both sides:

60/2 = x

Divide:

30 = x

So he will walk 30 miles in 5 hours.

C.

To find out, we can divide 12 / 2.

12 / 2 = 6 miles per hour
8 0
3 years ago
HELP PLEASE!!! 10 PTS!!
allsm [11]

Answer:

m∠DEC = 78°

Step-by-step explanation:

Given information: AC = AD, AB⊥BD, m∠DAC = 44° and CE bisects ∠ACD.

If two sides of a triangles are congruent then the opposite angles of congruent sides are congruent.

AC = AD                 (Given)

\angle ADC\cong \angle ACD

m\angle ADC=m\angle ACD

According to the angle sum property, the sum of interior angles of a triangle is 180°.

m\angle ADC+m\angle ACD+m\angle DAC=180

m\angle ACD+m\angle ACD+44=180

2m\angle ACD=180-44

2m\angle ACD=136

Divide both sides by 2.

m\angle ACD=68

CE bisects ∠ACD.

m\angle ACE=m\angle DCE=\dfrac{\angle ACD}{2}

m\angle ACE=m\angle DCE=\dfrac{68}{2}

m\angle ACE=m\angle DCE=34

Use angle sum property in triangle CDE,

m\angle CDE+m\angle DCE+m\angle DEC=180

68+34+m\angle DEC=180

68+34+m\angle DEC=180

102+m\angle DEC=180

Subtract 102 from both sides.

m\angle DEC=180-102

m\angle DEC=78

Therefore, the measure of angle DEC is 78°.

6 0
2 years ago
Can someone help me please!!
Gennadij [26K]

Answer:

Step-by-step explanation:

∠2, ∠3, and ∠4

5 0
2 years ago
Read 2 more answers
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