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3 years ago

HELP PLEASEEE THANK YOUUU

Mathematics

1 answer:

PtichkaEL [24]3 years ago

7 0

Answer:

banana$1.45,Apple $$1.30,orange $1.30

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35. Para pintar una casa se mezclaron 5/4 L do pintura blanca y 1/2 L de pintura azul. Al final solo se emplearon 213 L de la me

maw [93]

Answer:

Total paint left over = $\frac{13}{12}L$

Step-by-step explanation:

Given - To paint a house, 5/4 L of white paint and 1/2 L of blue paint

were mixed. In the end only 2/3 L of the mixture were used.

To find - How many liters of paint were left over ?

Proof -

Given that,

5/4 L of white paint and 1/2 L of blue paint were mixed.

So, total mixture = $(\frac{5}{4} + \frac{1}{2})L$

= $\frac{5 + 2}{4}L$

= $\frac{7}{4}L$

⇒Total mixture = $\frac{7}{4}L$

Now,

Given that ,

In the end only 2/3 L of the mixture were used.

So, total mixture left = $(\frac{7}{4} - \frac{2}{3})L$

= $\frac{21 - 8}{12}L$

= $\frac{13}{12}L$

∴ we get

Total paint left over = $\frac{13}{12}L$

6 0

3 years ago

Pleas help! I think its A but I'm not sure! 50 points

DedPeter [7]

Answer:

x<-9

So C is correct answer

Step-by-step explanation:

-3x-7<20

-3x<20+7

-3x<27

x<27/-3

x<-9

6 0

3 years ago

Read 2 more answers

Solve the system using either Gaussian elimination with back-substitution or Gauss-Jordan elimination. (If there is no solution,

Gnom [1K]

Answer:

x1=-4/5, x2=18/5 and x3=7/5

Step-by-step explanation:

$\left[\begin{array}{ccc|c}1&0&-3&-5\\3&1&2&4\\2&2&1&7\end{array}\right]$

you can do linear combination between the rows:

2nd row=R2-3R1 and 3th row=R3-2R1

$\left[\begin{array}{ccc|c}1&0&-3&-5\\0&1&11&19\\0&2&7&17\end{array}\right]$

3th row=(3R2-R3)/15

$\left[\begin{array}{ccc|c}1&0&-3&-5\\0&1&11&19\\0&0&1&\frac{7}{5} \end{array}\right]$

1st row=R1+3R3 and R2-11R3

$\left[\begin{array}{ccc|c}1&0&0&-4/5 \\0&1&0&18/5 \\0&0&1&7/5\end{array}\right]$

x1=-4/5, x2=18/5 and x3=7/5

6 0

3 years ago

Vince worked 675 hours in 15 weeks. At what rate did he work in hours per week?

NNADVOKAT [17]

Answer:

45 hours a week

Step-by-step explanation:

Ok, so we know that he worked 675 hours in 15 weeks.

So all we need to do is divide the hours by the amount of weeks, which is 15:

675/15= 45

So he worked 45 hours a week!

6 0

3 years ago

Help fast! Determine which lines, if any, must be parallel. Check all that apply.

Vanyuwa [196]

Answer:

a b m n

Step-by-step explanation:

8 0

3 years ago