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2 years ago

Which equation gives the number of 1/4 centimeter that are in 7/8 centimeter?

Mathematics

2 answers:

natali 33 [55]2 years ago

8 0

Answer: B. $\dfrac{7}{8}\text{ divided by}\dfrac{1}{4}=\dfrac{7}{2}$

Step-by-step explanation:

Expression to represent the number of a in b (where b>a) is given by :-

$b\div a=\dfrac{b}{a}$

Similarly, the expression to represent the number of $\dfrac{1}{4}$ centimeter that are in $\dfrac{7}{8}$ centimeter.

$\dfrac{7}{8}\div\dfrac{1}{4}\\\\=\dfrac{7}{8}\times\dfrac{4}{1}=\dfrac{7}{2}$

Hence, the correct answer is $\dfrac{7}{8}\text{ divided by }\dfrac{1}{4}=\dfrac{7}{2}$

lesya692 [45]2 years ago

5 0

The answer is B.

remember to use the reciprocal when dividing with fractions

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An exam worth 145 points contains 50 questions. The number of two-point questions is equal to 50 minus the number of five-point

abruzzese [7]

Answer:

Therefore there are 35 number of 2-point questions and 15 number of 5-point questions.

Step-by-step explanation:

i) let the number of 2 point question is x.

ii) let the number of 5 point questions be y

iii) total number of questions is 50

iv) therefore x + y = 50

v) it is also given that 2x + 5y = 145

vi) solving for the two equations found in iv) and v). Multiplying iv) by 2 we get

2x + 2y = 100

vii) subtracting equation vi) from equation v) we get 3y = 45.

viii) Therefore y = 15.

ix) using the value in viii) and substituting in iv) we get x + 15 = 50.

Therefore x = 50 - 15 = 35

x) Therefore there are 35 number of 2-point questions and 15 number of 5-point questions.

3 0

3 years ago

Read 2 more answers

HELP!!! Simplify cos^2 0 -1/ 4sin^2 0?

Shkiper50 [21]

We need to simpify the given expression. The given expression to us is ,

Given Expression :-

$\sf\implies \dfrac{ cos^2\theta -1}{4 \ sin^2\theta }$

Using Identity :-

$\sf\implies \red{ sin^2\theta + cos^2\theta = 1}$

So that :-

$\sf\implies - sin^2\theta = cos^2\theta -1$

We have :-

$\sf\implies \dfrac{ cos^2\theta -1}{4 \ sin^2\theta } \\\\\sf\implies\dfrac{ - sin^2\theta}{4sin^2\theta}=\boxed{\sf -\dfrac{1}{4}}$

Hence the required answer is -1/4. 

5 0

2 years ago

5/8+3/4 / -2/3 - 5/6 =

m_a_m_a [10]

Answer:

-11/12

Step-by-step explanation:

Add 5/8+3/4 (6/8) which is 11/8 and then get -2/3 - 5/6 which simplifies to -3/2

Multiply -3/2 by 4 to get it to like terms

11/8 / -12/8

Multiply and then simplify.

If you need help, just comment!!

3 0

3 years ago

4x +6y =0

PSYCHO15rus [73]

Here, x - 2y = 14
x = 14 + 2y

Now, substitute this value into first equation,
4x + 6y = 0
4(14 + 2y) + 6y = 0
56 + 8y + 6y = 0
14y = -56
y = -56/14
y = -4

Substitute it into second equation,
x = 14 + 2(-4)
x = 14 - 8
x = 6

In short, Your Answer would be: (6, -4)

Hope this helps!

4 0

3 years ago

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lions [1.4K]

Divide 29.15/265 = 0.11 or 11 percent

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2 years ago