All categories

3 years ago

Simplify the expression: 4x - (x + 3) + 5(2x - 8)

Mathematics

2 answers:

kirill [66]3 years ago

4 0

Answer:

Step-by-step explanation:

4x - (x + 3) +5(2x - 8) = 4x + x*(-1) + 3*(-1) + 2x * 5 + (-8) * 5

= 4x - x - 3 + 10x - 40 {combine like terms}

= 4x - x + 10x - 3 - 40

= 13x - 43

Natasha2012 [34]3 years ago

4 0

Answer:

13x-43

Step-by-step explanation:

have a spectacular day! <3

You might be interested in

Dan and Becca have cups that are the same size. Dans cup is 1/4 full of water. Beccas cup is 1/6 full of water. Compare the amou

matrenka [14]

Answer:

Step-by-step explanation:

1/4 is greater than 1/6.

8 0

3 years ago

1. At the school bookstore, Harrison purchases 3 notebooks for $2.50 each, 10 pens for $0.35 each, and 5 mechanical pencils for

Artemon [7]

Find cost of pens and mechanical pencils

pen cost=number of pens times cost pe pen
pencost=10 times 0.35=3.50

mech cost=number of mechs times cost pe mech
mechcost=5 times 0.89=4.45

4.45 is more than 3.50
yes, mech cost mre than pens

8 0

3 years ago

In ΔJKL, k = 3.7 cm, ∠K=15° and ∠L=41°. Find the length of j, to the nearest 10th of a centimeter.

Alexandra [31]

Answer:

The length of side j is 11.85cm

Step-by-step explanation:

Given that

In triangle JKL,

$\angle k=15$

$\angle l=41$

Side k=LJ=3.7cm

To find side j=KL:

By using sine rule,

We can write as

$\frac{SinK}{LJ} = \frac{SinL}{JK} = \frac{SinJ}{KL} \\\frac{Sin15}{3.7} = \frac{Sin41}{JK} = \frac{SinJ}{KL}$

Using property of triangle,

$\angle k+\angle l+\angle j=180$

$15+41+\angle j=180$

$\angle j=124$

$\frac{Sin15}{3.7} = \frac{Sin41}{JK} = \frac{Sin124}{KL}\\\frac{Sin15}{3.7} = \frac{Sin124}{KL}\\KL=3.7\frac{Sin124}{Sin15}\\KL=3.7\frac{0.8290}{0.2588}\\KL=11.85cm$