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djverab [1.8K]
2 years ago
15

Two thirds plus a number plus 4 is 7

Mathematics
2 answers:
Reika [66]2 years ago
7 0
9/2 is the answer


7-4= 3
3times 3/2 is 9/2
Nitella [24]2 years ago
6 0

Answer:

The answer is \frac{7}{3}

Step-by-step explanation:

In order to determine the answer, we have to express the statement to a algebraic expression.

The "two thirds" means \frac{2}{3}.

Then "plus a number" means +x. "x" is the variable that we want to know its value.

Then "plus 4" means +4.

So, the algebraic expression is:

\frac{2}{3}+x+4=7

Then, we have to solve for "x". We free this variable in any side of the equation:

x=-\frac{2}{3}+7-4\\x=\frac{-2+9}{3}\\x=\frac{7}{3}\\

Finally, the "x" value is \frac{7}{3}

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If the velocity of a bicycle is 10 m/s how long will it take to cover a distance of 18 km<br>​
Sergeeva-Olga [200]

Answer:

time taken=1800 seconds

Step-by-step explanation:

velocity=v=10m/s

distance=S=18km=18×10³m=18000m

t=?

as we know that

velocity=\frac{distance covered}{time taken}

velocity×time taken=distance covered

now here we have to find time

time taken=\frac{distance covered}{velocity}

time taken=\frac{18000m}{10m/s}

time taken=1800seconds

6 0
2 years ago
Find the product of the following expression.<br> 4(3x2 - 4x + 5)
Papessa [141]

Answer:

-16x + 44

Solution:

4(3×2 - 4x + 5)

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= -16x + 44

4 0
2 years ago
Apply the zero matirx:<br> [16 -24] + [ 0 0 ]=[ x y]<br> X=? Y=?
Ainat [17]

Answer:

x = 16

y = -24

Step-by-step explanation:

Recall that the addition of matrices is done when matrices are of the same dimension. In this case, you are in fact adding matrices of the same dimension (dimension 1x2). Recall as well that in the addition of matrices, the elements of each matrix combine only with the element located in the exact same position in the other matrix.

So for this case the first element of the first matrix "16" combines with the first element of the second matrix "0" resulting in an element of value16 + 0 =16 in the new matrix.

Equally, the second element of the first matrix "-24" combines with the second element of the second matrix, resulting in : -24 + 0 = -24.

Therefore, the matrix resultant from this addition is: [16   -24] (same form of the first matrix, which indicates that adding a zero matrix to an existing matrix will not change the first matrix.

5 0
2 years ago
What's $1,000,000 - $69,607 - $296,900 - $5075 - $23,205 = ?
fomenos

Answer: $603,213

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
What is the value of x? (will give brainliest if you show your work) PLEASE HELP
andrew-mc [135]
Check the picture below.

\bf \cfrac{8}{12}=\cfrac{x+4}{2x+1}\implies 16x+8=12x+48\implies 4x=40&#10;\\\\\\&#10;x=\cfrac{40}{4}\implies x=10

8 0
3 years ago
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