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Dahasolnce [82]
3 years ago
5

A test has twenty questions worth 100 points. the test consists of

Mathematics
1 answer:
Sophie [7]3 years ago
6 0
B. False questions worth 3 ...
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A scale on a map shows that 1 inch = 25 miles. How many inches on the map represent 100 miles? *
Lilit [14]

Answer:

4 inches

Step-by-step explanation:

Every 25 miles the map shows 1 inch
100 miles is equal to 4 x 25 miles, thus 100 miles on the map will be 4 times longer than 1 inch => 4 inches

8 0
2 years ago
Y is inversely proportional to V1+x.<br> When x = 8, y = 2.<br> Find y when x = 15.
murzikaleks [220]

Answer:

y = 1.5

Step-by-step explanation:

Given x is inversely proportional to \sqrt{1+x} , then the equation relating them is

y = \frac{k}{\sqrt{1+x} } ← k is the constant of proportion

To find k use the condition when x = 8, y = 2

2 = \frac{k}{\sqrt{1+8} } = \frac{k}{\sqrt{9} } = \frac{k}{3} ( multiply both sides by 3 )

6 = k

y = \frac{6}{\sqrt{1+x} } ← equation of proportion

When x = 15 , then

y = \frac{6}{\sqrt{1+15} } = \frac{6}{\sqrt{16} } = \frac{6}{4} = \frac{3}{2} = 1.5

6 0
3 years ago
Help me please please please​
Helen [10]
1. 0.75
2. 0.54
3. 0.1875
4. 0.25
5. 016
3 0
2 years ago
Read 2 more answers
Solve for x.<br> 12x + 14<br> 1 + 5x<br> 76
mrs_skeptik [129]

Answer:

12x +14

1.) divide both sides but 12 to get the variable alone

12x becomes just the variable x

14 is now 1.16 with the 6 having a line above it showing its repeating.

x = 1.16 repeated

6 0
3 years ago
Please simplify the expression
nikklg [1K]
\bf (-5+8\cdot i)+(-9+5\cdot i)\implies -5+8i-9+5i\implies -5-9+8i+5i&#10;\\\\\\&#10;\boxed{-14+13i}
8 0
3 years ago
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