3 years ago

Evaluate the expression when a= 2 and c=-4. -a +5c

Mathematics

1 answer:

-Dominant- [34]3 years ago

4 0

The answer would be 18

You might be interested in

Which angles are supplementary angles?

Tpy6a [65]

Answer:

Supplementary angles are two angles with a sum of 18 0 ∘ 180 ^\circ 180∘ . A common case is when they lie on the same side of a straight line.

Answer - KJM and KJH

If i'm wrong please tell me

5 0

3 years ago

A scientist wishes to estimate the mean breaking strength of a certain type of steel rod within 3.0 psi with 95% confidence. Bas

yaroslaw [1]

Answer:97 rods

Step-by-step explanation:

The number of steel rods for 95% confidence level

$n=\left ( \frac{Z_\frac{\alpha }{2}\times \hat{\sigma }}{E} \right )^2$

$Z_\frac{\alpha }{2}=1.96$

E=3

$\hat{\sigma }=15$

Substituting values

$n=\left ( \frac{1.96\times 15}{3}\right )^2$

$n=96.04\approx 97$

Thus 97 rods is tested

6 0

3 years ago

I keep getting this question wrong

padilas [110]

Yeeeeeeeee ehehehehehehehehehej

3 0

2 years ago

Please help i need answer and explanation.

allsm [11]

Answer:

m<TVZ = 95

Step-by-step explanation:

2x+15+2x+5= 180

4x+20 =180

-20 -20

4x=160

x= 40

2x+15= m<TVZ

2(40)+15 = m<TVZ

80+15 = m<TVZ

95 = m<TVZ

To check:

2x+5= <WVZ

2(40)+5 = <WVZ

80+5 = <WZV

85+95 = 180

The two angles together should equal 180. Comment if you have any questions :)

6 0

3 years ago

Read 2 more answers

Which fraction is equivalent to 0.16 repeating

Oksanka [162]

Answer:

We need a reference to do this with but i would say 6/16

Step-by-step explanation:

I am a brainly helper

5 0

3 years ago