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Bogdan [553]
3 years ago
12

Write an expression for “Triple the sum of 33 and b”. *

Mathematics
1 answer:
IrinaK [193]3 years ago
8 0

Answer:

99+3b

Step-by-step explanation:

The original equation would be 3(33+b), but simplifying it would get 99+3b.

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Solve the system of equations.
ser-zykov [4K]

Answer:

x = 14

y = -7

z = -3

but this is none of the provided answer options !

Step-by-step explanation:

it's really easy by principle. it's just some work to do.

we try to find equations to express one variable in terms of the others.

but one thing there is : your teacher made a mistake.

the right solution is x = 14, y = -7, z = -3

your teacher made a typo at d.

but the right answer should be d.

just to give you an idea how this can be done (and also to prove that there is a mistake by the teacher):

we can directly try to transform one expression into one that describes x by y and z.

and then another to describe e.g. z by y. and then solve the third one just for y. and then we get the other 2 by these other expressions.

or we can e.g. add or subtract one equation to/from another. this is one of these cases, because we can find really simple expressions that way :

we do

5x + 6y + 7z = 7

- (3x + 4y + 3z = 5)

- (2x + 2y + 3z = 5)

---------------------------

0x + 0y + z = -3

=> z = -3

3x + 4y - 3×3 = 5

3x = -4y + 14

x = (-4y + 14)/3

2×(-4y + 14)/3 + 2y - 9 = 5

(-8y + 28)/3 + 2y = 14

-8y + 28 + 6y = 42

-2y = 14

y = -7

x = (-4×-7 + 14)/3 = (28+14)/3 = 42/3 = 14

3 0
3 years ago
PLEASE HELP!!!<br> Find MG.<br> ∆EGF~∆EML.
stiv31 [10]

Answer:

MG=56\ units

Step-by-step explanation:

step 1

Find the value of x

we know that

If two triangles are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent

In this problem we have that

∆EGF~∆EML

so

\frac{EG}{EM}=\frac{EF}{EL}

substitute the given values

\frac{5x+2}{16}=\frac{126}{28}

solve for x

5x+2=\frac{126}{28}(16)

5x+2=72\\5x=70\\x=14

EG=5x+2=5(14)+2=72\ units

step 2

Find MG

we know that

MG=EG-EM

substitute

MG=72-16=56\ units

3 0
3 years ago
The graph shows the cube root parent function.<br>Which statement is true? <br>A.<br>B.<br>C.<br>D.​
viktelen [127]

Answer:

<u>Answer is D.</u><u> (0,0) is the x- and y-intercept of the function</u>

Step-by-step explanation:

If you try finding the x and y intercept it would be (0,0)

6 0
3 years ago
Which ratio is equivalent to 4 : 10 choose all that apply
m_a_m_a [10]

Answer:

2:5

Step-by-step explanation:

2*2 = 4

5*2 = 10

Therefore, 2:5 :: 4:10

6 0
3 years ago
Read 2 more answers
In class of 160 students, 90 are taking math, 78 are taking science, and 62 are taking both math and science. What is the probab
Sphinxa [80]
Hi!

All of the students that are ONLY taking math is 90.

That is 90/160 kids taking only math.

90/160 simplified = 9/16

The answer is 9/16

Hope this helps! :)
5 0
4 years ago
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