Please help due in 4 minutes 20 points if the answer is right

Mathematics

1 answer:

lina2011 [118]3 years ago

6 0

Answer:

8.50

Step-by-step explanation:

just divide 2 and 17 and so on

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Help me with this questionnnnn

svetlana [45]

Answer:

3:9=4

Step-by-step explanation:

That is my answer

please brainliest

6 0

3 years ago

Simplify the following expression. 3x ^ 4 + 2x ^ 3 - 5x ^ 2 + 4x ^ 2 + 6x - 2x - 3x ^ 4 + 7x ^ 5 - 3x ^ 3

hammer [34]

Answer:

$7x ^ 5 - x ^ 3- x ^ 2 + 4x$

Step-by-step explanation:

1) $3x ^ 4 + 2x ^ 3 - 5x ^ 2 + 4x ^ 2 + 6x - 2x - 3x ^ 4 + 7x ^ 5 - 3x ^ 3$

Rearrange the expression.

2) $7x ^ 5+3x ^ 4- 3x ^ 4 + 2x ^ 3 - 3x ^ 3- 5x ^ 2 + 4x ^ 2 + 6x - 2x$

Solve.

3) $7x ^ 5 - x ^ 3- x ^ 2 + 4x$

4 0

3 years ago

How do you start this and find the weight of each shape? I do not remember doing this in class.

suter [353]

Let's say make the shapes, some variable name

say

⛁ ⚪ ◽ ▯
a b c d

so.. if take those are the shapes provided

then we can take a look at the first set and we can say that

2a + b + c = 20

a + 4d + b = 19

a + c = 9

3c + d + a = 19

thus $\bf \begin{cases}
2a + b + c = 20\\
a + 4d + b = 19\\
a + c = 9\\
3c + d + a = 19 
\end{cases}\\\\
-----------------------------\\\\
a+c=9\implies \boxed{c}=9-a\qquad thus
\\\\\\
2a+b+\boxed{9-a}=20\implies \underline{b}=11-a\impliedby thus
\\\\\\
a+4d+\underline{11-a}=19\implies d=\cfrac{8}{4}\implies d=2\\\\
-----------------------------\\\\
then\qquad 3\left(\boxed{9-a } \right)+\boxed{2}+a=19\implies 27-3a+2+a=19
\\\\\\
10=2a\implies 5=a$

and surely you can find the other two

4 0

3 years ago

Please help and look at the others

Studentka2010 [4]

Answer:

Step-by-step explanation:

pls give brainliest :)

8 0

3 years ago

Read 2 more answers

Solve the compound inequality shown below. Show steps. <br> -4< 3x -1<5

Liono4ka [1.6K]