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3 years ago

To solve an equation of the form ax=b you need to divide by the _____.

Mathematics

2 answers:

ss7ja [257]3 years ago

8 0

A. Coefficient - Apex as well

Veseljchak [2.6K]3 years ago

6 0

A is the coefficient of x in this case.

So A. is the right answer as you need to divide by the coefficient.

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12 to x and 4 to 117

Alex73 [517]

Write a proportion and solve for x ....

12 / x = 4 / 117

Cross multiply ...

12 * 117 = 1404

x * 4 = 4 x

4 x = 1404

x = 351

7 0

4 years ago

In a random sample of 1,000 exams, the average score was 500 points with a standard deviation of 80 points.

bagirrra123 [75]

90% c.I. is given by

5 0

3 years ago

-3x^2 plus 24x = 27 <br> complete the square

Rudik [331]

You can divide the whole expression by -3:

$-3x^2+24x=27 \iff x^2-8x = -9$

Recalling that

$(x-a)^2=x^2-2ax+a^2$

Let's compare the middle term:

$-8x = -2ax \iff a=4$

So, we want to complete

$(x-4)^2 = x^2-8x+16$

Which differs from $x^2-8x$ by 16. So, if we add 16 to both sides, we have

$x^2-8x=-9 \iff x^2-8x+16=7 \iff (x-4)^2=7$

3 0

4 years ago

Read 2 more answers

Solve the following equation on the interval [0,2 \pi)<br> Cot(3x)=\sqrt{3}

Orlov [11]

Cot(3x)=3^(1/2)

cot(x)= cos(x)/sin(x)

cot(3x)= cos(3x)/sin(3x)

look at a unit circle chart

find a value for cos that has sqrt(3) in it

which one will reduce so that the cos/sin will equal sqrt(3)?

pi/6 radians

now cot(3x) implies that x is one third this value

pi/18 is the answer

4 0

3 years ago

A two digit number when read from left to right to right consiststs of consecutive integers. the nmber is six more than for time

Solnce55 [7]

I suppose you want to know such number. Since we have a two digit number consisting of two consecutive integers, the only possible numbers are:

$12,23,34,45,56,67,78,89$

Since we sorted all the cases out, we simply have to check which one satisfies the requirement. For each number, we'll write four times the the sum of its digits, and add 6, hoping to get the original number.

$\text{Number: } 12,\ \ 4\times \text{sum of digits: } 12\ \ \text{plus six: } 18\neq 12$

$\text{Number: } 23,\ \ 4\times \text{sum of digits: } 24\ \ \text{plus six: } 30\neq 23$

$\text{Number: } 34,\ \ 4\times \text{sum of digits: } 28\ \ \text{plus six: } 34$

So, the answer is 34.

3 0

3 years ago