Please help! Question is in Picture below!

Mathematics

1 answer:

Cerrena [4.2K]3 years ago

8 0

C & d because 8th graders have a higher % of liking.

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Factor 15(2z+1)^3+10(2z+1)^2-25(2z+1)

ELEN [110]

$15(2z+1)^3+10(2z+1)^2-25(2z+1)\\\\subtitute\ x=2z+1\\\\15t^3+10t^2-25t=5t\cdot3t^2+5t\cdot2t-5t\cdot5=5t(3t^2+2t-5)\\\\=5t(3t^2-3t+5t-5)=5t[3t(t-1)+5(t-1)]\\\\=5t(t-1)(3t+5)\\\\=5(2z+1)(2z+1-1)[3(2z+1)+5]\\\\=5(2z+1)(2z)(6z+3+5)=5(2z)(2z+1)(6z+8)\\\\=10z(2z+1)(6z+8)=10z(2z+1)(2)(3z+4)\\\\=\boxed{20z(2z+1)(3z+4)}$

4 0

4 years ago

(15 point question)

vivado [14]

Answer:

D. CPCTC

Step-by-step explanation:

THere is a statement column proof given for angle bisector construction.

Statement Justification

Angle MBP is congruent to CPCTC

angle NBP

Since the previous line proved congruence for the two triangles by SSS,

the next step is corresponding angles are equal, by corresponding parts of congruent triangles are congruent

So we have the missing justification as CPCTC

D, CPCTC

6 0

3 years ago

Read 2 more answers

And this one !!!!!!!!

PIT_PIT [208]

Eli:£180
Freda:£260
Geoff:£360

5 0

3 years ago

Read 2 more answers

Helphelphelpjehkejjosndidnkdndjdndjfnkdndosndjjd

Hoochie [10]

A'(1,-2)
B'(1,-3)
C'(-1,-3)
D'(-1,-2)

8 0

4 years ago

Step by step <br>7.86×4.6

Slav-nsk [51]

This method may be different
First of all remove all decimal points leaving the numbers 786*46
786*46=36156
Then return the decimal point how many numbers came after the decimal point in both numbers? 3
so 36156 becomes 36.156

8 0

4 years ago