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OverLord2011 [107]
3 years ago
9

12 more than the difference of half a number and 3 is 45. Plz answer

Mathematics
1 answer:
son4ous [18]3 years ago
7 0

Answer:

x=18

Step-by-step explanation:

the result of 12 added to the difference of half a number and 3 is 45.

that looks something like this

12+\frac{1}{2}x= 45

which can be solved as such

\frac{1}{1} x+(12-3)=45\\\frac{1}{2}x+9=45\\\frac{1}{2}x=45-9\\ \frac{1}{2}x=36\\\frac{2}{1}*\frac{1}{2}x=36*\frac{2}{1} \\  x=36*2\\x=72

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Sasha is making some shelves which are 75.5 cm long. If the wood she is using is 180 cm long, how many pieces will she need to m
anzhelika [568]

Answer:

3

Step-by-step explanation:

Since the shelves are 75.5cm long, the total length she would be needing is 75.5cm × 6 = 453cm

Now, the length of the wood she is using is 180cm, to get enough length to make the shelves, we would need to divide 453cm by 180cm which gives a value of around 2.51

This is approximately equal to 3 when rounded up to the nearest whole number.

6 0
3 years ago
Which value cannot represent the probability of an event occurring? StartFraction 1 over 100 EndFraction 0. 29 85% Three-half.
Serjik [45]

Every value{0.01, 0.29, 85%} can represent the probability of an event occurring except option d that is 1.5.

Given to us,

a.)  \dfrac{1}{100}

b.)  0.29

c.)  85%

d.)  \dfrac{3}{2}

The probability help us to know about the probability of specific events occurring.

For a sure event, the probability is always 1,

while for an event that will never happen the probability is always 0.

Thus, probability(p),  \bold{1 \geq p\geq 0}.

Now looking at the options,

a.)  \dfrac{1}{100} = 0.01

b.)  0.29

c.)  85% = 0.85

d.)  \dfrac{3}{2} = 1.5

Now comparing each option with \bold{1 \geq p\geq 0}.

Therefore, the only option which is not feasible is option d that is 1.5.

Hence, every value{0.01, 0.29, 85%} can represent the probability of an event occurring except option d that is 1.5.

To know more visit:

brainly.com/question/795909

3 0
2 years ago
Read 2 more answers
the volume of the cone is 25.12cm cubed, and the area of the base is 12.56cm squared.what is the height
Lady bird [3.3K]

Height of the cone having volume as 25.12 \text { cm}^{3} and base area 12.56 \text { cm}^{2} is 6 cm.

Solution:

Given that volume of cone = 25.12 \text{ cm}^{3}

Area of base = 12.56 \text { cm}^{2}

Need to determine height of the cone.

Formula for volume of the cone is as follows

\mathrm{V}_{c}=\frac{1}{3} \pi r^{2}{h} \rightarrow (1)

Area of circular base of cone = A_{b}=\pi r^{2}

Replacing \pi r^{2} \text { by } A_{b} in equation (1), we get

\mathrm{V}_{\mathrm{c}}=\frac{1}{3} \mathrm{A}_{\mathrm{b}} \mathrm{h}

\Rightarrow \frac{3 \mathrm{V} c}{\mathrm{A}_{\mathrm{b}}}=h

\Rightarrow h=\frac{3 \mathrm{v} c}{\mathrm{A}_{\mathrm{b}}} \rightarrow (2)

In our case Volume of cone V_c= 21.12 \text{ cm}^3 and Area of base A_b=12.56 \text { cm}^2

On substituting the values of volume and area in equation 2 we get

h=\frac{3 \times 25.12}{12.56}=6 \text{ cm }

7 0
3 years ago
Can yall please help and try to put the steps but if not i completely understand, ty
dem82 [27]

Answer:

c

Step-by-step explanation:

its c

7 0
3 years ago
Each bag of apples weighs 4½ pounds. How much would 3½ bags of apples weigh?\
bonufazy [111]

Answer:

15 3/4 pounds

Step-by-step explanation:

4.5*3.5=15.75

3 0
3 years ago
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