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3 years ago

9

Given that BCD and BCA form a straight angle, if BAC measures 40 degrees and BCD measures 75 degrees, then the measure of ABC is

___ degrees.

1 answer:

Irina-Kira [14]3 years ago

6 0

Answer:

∠ABC= 35°

Step-by-step explanation:

im not sure if u need explanation but comment if u do

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If f(x) = 3x - 5 and g(x) = 7x + 2, what is (f * g)(x)? NEED HELP ASAP!!!!

QveST [7]

Answer:(f*g)(x)= 21x^2 -29x -10

Step-by-step explanation:

(3x-5)(7x+2)

21x^2-35x+6x-10

21x^2-29x-10

6 0

3 years ago

Using the proportion 2/5=y/100 which equation can be used to find the value of Y

natulia [17]

2/5 = y/100
40/100 = y/100
Y=40

4 0

3 years ago

Select the postulate or theorem that you can use to conclude that the triangles are similar.

insens350 [35]

Answer: SAS similarity postulate

Step-by-step explanation:

According to SAS postulate of similarity, two triangles are called similar if two sides in one triangle are in the same proportion to the corresponding sides in the other, and the included angle are congruent.

In triangles, QNR and MNP,

$\frac{QN}{MN} = \frac{QM+MN}{MN} = \frac{10+8}{8} = \frac{18}{8} = \frac{9}{4}$

$\frac{NR}{NP} = \frac{NP+NR}{NP} = \frac{10+8}{8} = \frac{18}{8} = \frac{9}{4}$

$\implies \frac{QN}{MN} = \frac{NR}{NP}$

Also,

$\angle QNR\cong \angle MNP$ (Reflexive)

Thus, By SAS similarity postulate,

$\triangle QNR\sim\triangle MNP$

⇒ Option first is correct.

8 0

3 years ago

What is the solution to the system of equations<br><br> y=2x-3.5<br><br> x-2y=-14

PIT_PIT [208]

Y-2x=-3.5
x-2y=-14
then multiply the first term by 2
2y-4x=-7
x-2y=-14
then sum them
-3x=-21
x=-7
y=3.5

5 0

3 years ago

HELP I NEED HELP ASAP

masha68 [24]

Answer:

i think it's c but I'm rly not sure on this one...

3 0

3 years ago