3 years ago

Regroup through thousands9 tens 10 ones= hundreds

Mathematics

1 answer:

iren2701 [21]3 years ago

4 0

Can help me plzzzzzz...!!!! f) i) dont need

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137 has a half line of approximately 30 years. How much of a 40 g sample would be left after 90 years??

AnnZ [28]

How much of a 40 g sample would be left after 90 years

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3 years ago

I have a slope of -4 (m=-4), would that be negative four over positive one or would that be negative 4 over negative one?

katrin [286]

If you have a slope of -4 then it would be -4/1 because rise/run. If it were -4/-1 then the slope would be 4.

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3 years ago

Convert from Fahrenheit to Celsius

Igoryamba

Step-by-step explanation:

Given F is 82 Degrees

To find - In Celsius ?

Answer

Using the formula:

$\frac{9}{5}C + 32 = F \\ = > C = (F - 32) \times \frac{5}{9} \\ C = (82 - 32) \times \frac{5}{9} \\ = > \frac{250}{9}C \\ = > 27.8°C$

Therefore, The answer is 27.8°C

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3 years ago

Find the m<bac, if m<dec= 58 and m<edc =43 a. 43 b. 58 c. 79 d. 101

mamaluj [8]

We are looking to figure out the size of m<CAB
Since line AB is parallel to the line CD, m<CAB corresponds to m<ECD which means the size of the angles equals
m<ECD can be found by using the fact that angles in a triangle add up to 180°,
hence, 180°-58°-43°=79°

The size of m<CAB is 79°

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4 years ago

Read 2 more answers

Jan bought 6 cookies and 4 doughnuts for 3.50. Tom bought 12 cookies and 5 doughnuts got 5.23. Write and solve a system of equat

iren2701 [21]

0.19 for one cookie and 0.59 for one doughnut

x for how much one cookie costs and y for how much one doughnut costs
6x+4y=3.5
12x+5y=5.23

solve by substitution: (elimination would work too)
4y=3.5-6x
y=0.875-1.5x
12x+5(0.875-1.5x)=5.23
12x+4.375x-7.5x=5.23
4.5x=0.855
x=0.19
now use x to solve for y:
6(0.19)+4y=3.5
1.14+4y=3.5
2.36=4y
y=0.59

Check the work: 6(0.19)+4(0.59)=3.5

4 0

4 years ago