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mart [117]
3 years ago
11

D-4=23 what is the variable

Mathematics
1 answer:
DIA [1.3K]3 years ago
8 0
D. D is the variable. If you want to find D, you add 4 to both sides, giving you "D=27".
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In Class 1, what is the median score? A) 70 B) 70.5 C) 71.5 D) 72
evablogger [386]

Answer:

B)  70.5

Step-by-step explanation:

Median = middle value when the values are placed in order.

If there are two middle values, the median is the mean of those two values.

<u>Class 1</u>

45 46 51 52 53 53 61 63 64 65 66 68 70 <u>70 71</u> 73 76 77 79 81 82 83 84 87 90 92 93 95

There are 28 values in Class 1.

Therefore, there are two middle values: 14th and 15th values

14th value = 70

15th value = 71

\implies \textsf{Median}=\dfrac{70+71}{2}=70.5

3 0
2 years ago
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Please answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!!
Lena [83]

Answer:

132

Step-by-step explanation:

4 0
2 years ago
If you are at mile marker 100 when you start your trip and mike marker 300 four hours later, where were you after 3 hours (assum
Marysya12 [62]

After 3 hours, you will be on 450 mile marker.

Step-by-step explanation:

<u>step 1:</u> At start, the number in the mile marker is 100

<u>step 2:</u> After 4 hours, the number in the mile marker is 300

<u>step 3:</u> The difference of 300-100= 200. In 4 hours you crossed 200 mile markers.

<u>step 4:</u> Therefore, for 1 hour you can cross= 200/4= 50 mile markers.

For 3 hours, the number of mile markers crossed= 3*50= 150 mile markers.

<u>step 5:</u> After 3 hours, the number in the mile marker will be= 300+150= 450

5 0
3 years ago
Explain please and tell me how to do it ?
SCORPION-xisa [38]

The trick to calculating the area here is to subdivide the diagram into smaller parts. For example, there's a 3 cm-by-3cm square. The rectangle is 4 cm by 8 cm.. The triangle has a base of 5 cm and a height of 3 cm.

Total area = area of square + area of rectangle + area of triangle

= 9 cm^2 + 32 cm^2 + (1/2)(5 cm)(3 cm)

= (9 + 32 + 7.5) cm^2

= 48.5 cm^2 (total area of figure)

8 0
3 years ago
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Find the missing b for a trapezoid with a=68, h=4, b=21
MAVERICK [17]

We will have to use the formula for the area of a trapezoid on this problem, which is (b_1 and b_2 are the bases of the trapezoid and h is the height):

\dfrac{b_1 + b_2}{2} \cdot h


All we need to do is substitute the information we are given into our formula:

\dfrac{21 + b_2}{2} \cdot 4 = 68


Now, let's just simplify the equation:

\dfrac{21 + b_2}{2} \cdot 4 = 68

\dfrac{21 + b_2}{2} = 17

21 + b_2 = 34

b_2 = 13


The missing base has a length of 13 units.

4 0
3 years ago
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