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3 years ago

15 less than twice a number in algebraic expression

Mathematics

2 answers:

hoa [83]3 years ago

4 0

I think it’s 2x-15, sorry if I’m wrong

gladu [14]3 years ago

4 0

The answer is 2x - 15

Hope this helps!

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HELP PLEASE solve the right triangle

aleksandrvk [35]

Answer:

Part 1) $FG=4.4\ units$

Part 2) $EF=3.9\ units$

Part 3) $m\angle G=63^o$

Step-by-step explanation:

step 1

Find the measure of length side FG

In the right triangle EFG

we know that

$sin(27^o)=\frac{GE}{FG}$ ----> by SOH (opposite side divided by the hypotenuse)

substitute the given values

$sin(27^o)=\frac{2}{FG}$

$FG=\frac{2}{sin(27^o)}=4.4\ units$

step 2

Find the measure of length side EF

In the right triangle EFG

we know that

$cos(27^o)=\frac{EF}{FG}$ ----> by CAH (adjacent side divided by the hypotenuse)

substitute the given values

$cos(27^o)=\frac{EF}{4.4}$

$EF=cos(27^o)(4.4)=3.9\ units$

step 3

Find the measure of angle G

we know that

$m\angle G+27^o=90^o$ ---> by complementary angles in a right triangle

$m\angle G=90^o-27^o=63^o$

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3 years ago

Which of the following best describes a regular polygon when the measure of each exterior angle is 90?

marin [14]

I would think A because regular quadrilaterals have 90-degree angles.

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The radius of the circle - shaped poster is 9 inches. What is the approximate circumference?

statuscvo [17]

Answer: $56.55inch$

Step-by-step explanation:

Circumference formula: $C = 2\pi r$

$C = 2(3.1416)(9inch)$

$C= 56.55inch$

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3 years ago

WILL GIVE BRAINLIEST, PLS HELP

marusya05 [52]

My answers were

d=2.6

c=1.45

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Digiron [165]

z and 100 are on the same line so the total is 180

180-100=z

80=z

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3 years ago