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vodomira [7]
2 years ago
6

PLEASE HELLPPPP What is 20 + 57 (45x56), (12÷50)

Mathematics
2 answers:
ValentinkaMS [17]2 years ago
4 0

#1

\\ \sf\longmapsto 20+57(45\times 56)

  • Solve the Bracket

\\ \sf\longmapsto 20+57(2520)

\\ \sf\longmapsto 20+143640

\\ \sf\longmapsto 143660

viva [34]2 years ago
4 0

Step-by-step explanation:

  • 20+57(45×56)
  • 20+57(2520)
  • 20+143640
  • 143660
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For the vectors u and v with magnitudes u = 88 and v = 99​, find the angle θ between u and v which makes u and v = 77.
WARRIOR [948]

Answer:

<h2>89.5°</h2>

Step-by-step explanation:

Using the vector formula u.v = |u||v|cos\theta

|u| = magnitude of vector u

|v| = magnitude of vector v

u.v is the dot product of vector u and v

Given |u| = 88, |v| = 99 and u.v = 77, to get \theta we will substitute the given values into the equation above;

77 = 88*99cos\theta\\cos\theta = \frac{77}{88*99} \\cos\theta = \frac{77}{8712} \\cos\theta = 0.008838\\\theta = cos^{-1} 0.008838\\\theta = 89.5^{0}

4 0
2 years ago
Please help me answer this, I don't get what I'm supposed to do TvT
kompoz [17]

Answer:

You save 86 cents per pound.

Step-by-step explanation:

According to the given problem, grocery store B charges chicken 5 pounds of chicken for $38.20. Consider finding the unit price:

To find the unit price of any item, do the following calculation:

Total Price / Total amount = $$$ per amount.

The unit price of store b is \frac{38.20}{5}=7.64 . In other words, every pound of chicken costs $7.64 at store b.

For store a, we are provided with a table. Given how the question is being asked, we should <u>expect a higher unit price</u>. We can take any charge to find the unit price since the price should be consistent no matter how many pounds you buy. I will calculate the first row:

\frac{12.75}{1.5}=8.5

In other words, every pound of chicken costs $8.50 at store a. <u>This price is higher</u>. You can verify this is the correct unit price by multiplying the unit price with any amount of pounds provided at the table. You should get the total cost.

So, now that we have both unit prices, we can calculate the difference to find out how much we save per pound when choosing store b:

8.50-7.64=0.86.

6 0
2 years ago
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maks197457 [2]
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6 0
3 years ago
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Step-by-step explanation:

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2 years ago
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The diagram shows a circle, centre O.<br> Work out the value of a. <br> BCO=41 degrees
sattari [20]

Answer:

a = 49°

Step-by-step explanation:

OB = OC ( both radii of the circle ), thus

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The angle on the circumference BAC is half the angle at the centre for angles subtended on the same arc , thus

a = 0.5 × 98° = 49°

5 0
3 years ago
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