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3 years ago

I need help with this one

Mathematics

1 answer:

Zarrin [17]3 years ago

5 0

Answer:

B,D

Step-by-step explanation:

The small number is always the bigger one in negatives because it is closer to 0 in a timeline

_-6_-5_-4_-3_-2_-1_0_1_2_3_4_5_6

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In the following diagram, ABCD is a parallelogram. Is AC the bisector of angle BAD? Show calculations and explain

vlada-n [284]

AC is not the bisector of angle BAD. AC made both sides a triangle and every triangles angles have to add to 180 degrees. So 115+30= 145 meaning angle DAC is 35 degrees. So AC cuts through BAD but one side is 30 degrees and the other is 35(DCB and DAB are the same angle…they both have to add up to 65 degrees)

3 0

3 years ago

Read 2 more answers

Which answer choice correctly completes the sentence? The bridge was closed, but that hasn't __________ us any time. A. costed B

Rainbow [258]

The bridge was closed, but that hasn't <span>cost </span>us any time

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4 years ago

The table displays the frequency of scores for a calculus class on an exam. The mean of the exam scores is 3.5. Score 1 2 3 4 5

vladimir1956 [14]

Answer:

f=11

Mode=4

Median=4

Explanation:

We are given that

a.Mean of the exam score, $\bar x$ =3.5

Score(x) frequency C.F

1 1 1

2 3 4

3 f 15(4+f=4+11)

4 13 28

5 4 32

$\sum f_i=1+3+f+13+4=21+f$

$\sum f_ix_i=1(1)+2(3)+3(f)+4(13)+5(4)=1+6+3f+52+20=79+3f$

$(\bar x)=\frac{\sum f_ix_i}{\sum f_i}$

Using the formula

$3.5=\frac{79+3f}{21+f}$

$73.5+3.5f=79+3f$

$3.5f-3f=79-73.5$

$0.5f=5.5$

$f=\frac{5.5}{0.5}=11$

b.Mode:The number which is repeat most times .

4 repeat most times

Hence, mode of all exam scores=4

N=32

N is even

$Median=\frac{(\frac{n}{2})^{th}+(\frac{n}{2}+1)^{th}}{2}$

Median= $\frac{16th+17th}{2}=\frac{4+4}{2}=\frac{8}{2}=4$

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4 years ago

Solve the literal equation for x<br><img src="https://tex.z-dn.net/?f=h%20%3D%207x%20-%204ux" id="TexFormula1" title="h = 7x - 4

igomit [66]

Answer: x= h/-4u+7

Step-by-step explanation:

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4 years ago

I need help now.......

nata0808 [166]

We already know that the box has an area of 100 sq. inches. All we have to do now is subtract the area of the 4 circles from the area of the box.

The formula for a circle's area is $A=2\pi r$ . We already know the radius, so one circle has an area of 12.56 units (4π in terms of pi). There are 4 circles, making your final equation $100 - 4(12.56)$ .

$100 - 50.24 = 49.76in^2$

7 0

3 years ago