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butalik [34]
2 years ago
9

a contractor was paving a driveway he mixed 4/7 ton lf sand and 1/3 ton of concrete how much did the mixture weigh

Mathematics
1 answer:
NeTakaya2 years ago
8 0

Answer: 19/21

Step-by-step explanation: find the same multiple for both so you can combine them

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In ∆ABC, m∠ACB = 90°, m∠A = 40°, and D ∈ AB such that CD is perpendicular to side AB. Find m∠DBC and m∠BCD.
podryga [215]

Answer:  ∠B = 50°

               ∠BCD = 40°

<u>Step-by-step explanation:</u>

ACB is a right triangle where ∠A = 40° and ∠C = 90°.

Use the Triangle Sum Theorem for ΔABC to find ∠B:

∠A + ∠B + ∠C = 180°

40° + ∠B + 90° = 180°

         ∠B + 130° = 180°

                  ∠B = 50°

BCD is a right triangle where ∠B = 50° and ∠D = 90°.

Use the Triangle Sum Theorem for ΔBCD to find ∠C:

∠B + ∠C + ∠D = 180°

50° + ∠C + 90° = 180°

         ∠C + 140° = 180°

                  ∠C = 40°

8 0
3 years ago
Shelly is making an apple pie. She needs 1/2 of a cup of sugar for her pie . How many cups of sugar will she need if she need if
sergejj [24]

Answer: Shelly will need 6 cups of sugar.

Step-by-step explanation:

Multiply 3 by 1/2

6 0
3 years ago
Read 2 more answers
1) 2m + 3m2 - 4m
Lilit [14]

Answer:

1) 2m + 3m2 - 4m=7

7) 3m2 – 2m + 4m= 11

8) 20 + 109 + 39 - 4= 164

3) 2m + 4m - 3m2= -3

9) 4xy + x + 2xy= 0

4) 2y + 14x - 7x + 9y= 18

10) 6m2 - 6m - 9m2= -51

Step-by-step explanation:

5 0
3 years ago
Describe how to find the number of four dollar train ticket you can buy with $32
aleksley [76]
You solve this, you simply divide 32 by 4 to find out how many you can buy. If you divide 32 by 4, you get 8. So you can buy 8 train tickets in total.
8 0
3 years ago
1<br> Find the slope of the following graph and write your result in the empty box.<br> Answer:
Viktor [21]

Answer:

y = 2x

Step-by-step explanation:

Slope = \frac{y}{x} =\frac{2}{1}

4 0
2 years ago
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