All categories

3 years ago

Evaluate 3a^2-5b+8 when a=-2 and b=3

Mathematics

1 answer:

iVinArrow [24]3 years ago

6 0

3 (-2)^2 -5 (3)+8
3 (4)-5 (3)+8
12-15+8
-3+8=5
Hope this helps :)

You might be interested in

A mother is five times as old as her daughter. In 6 years, the mother will

docker41 [41]

Answer:

Mom=30 Daughter=6

Step-by-step explanation:

M=5×D

M+6=3×D

5D=3D-6

2D=6

D=12

M=12×3=36

Now: D=12-6=6

M=36-6=30

4 0

2 years ago

Read 2 more answers

Which number line represents the solution set for the end equality 3x < -9

shepuryov [24]

divide both sides by 3

so, you'll get x<-3

that's your solution

4 0

4 years ago

5. To rent a van, a moving company charges a daily fee plus a fee per mile.

Setler [38]

C = 10d+ 45 ? Hope this helps? Let me know if it’s right or not.

4 0

3 years ago

Can someone offer help to this ratio question

AlekseyPX

Answer:

Cherry Pink has not been made ( $25:17\neq 4:3$ )

Step-by-step explanation:

Given that she already has 60litres of Rose Pink paint, we use the ratios to determine the volumes of red/white used:

$Rose Pink=60l\\\\Red=\frac{1}{3}\times 60\\\\=20l\\\\White=\frac{2}{3}\times 60\\\\=40l$

#Add these proportions to the additional red and white paints to determine if Cherry Pink has been made:

$V_r=20l+80l\\\\=100l\\\\V_w=40l+28l\\\\=68l\\\\\therefore r:w=100l:68l \ \ \ \ \ \ \ \ \ \ \# simplify\\\\r:w=25:17$

We equate this proportion to the Cherry Pink proportion to verify if Cherry pink has been made:

$25:17\neq 4:3$

Hence, Cherry pink has not been made.

3 0

4 years ago

12dogs to 92 cats whats the ratio as a fraction in simplest form

DedPeter [7]

12 dogs to 92 cats.

12/92

Both 12 and 92 are divisible by 4.

12/4=3

92/4=23

Simplified ratio: 3/23

There are 3 dogs for every 23 cats.

4 0

4 years ago