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aleksandrvk [35]
3 years ago
5

Simplify the expression:

Mathematics
2 answers:
Andrews [41]3 years ago
6 0
You add the common terms together 
1) 2x+7x+5y
2) 9x+5y
Verdich [7]3 years ago
3 0
2x+5y+7x
2x+7x=9x
Simplified form would be 9x+5y.
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(25 POINTS) Terry realized that 25% of his money was $12.50. He made a double number line to represent this. What number would g
DedPeter [7]

Answer:

you would double it A 0 12.50 25.00

B 0 25 50

Step-by-step explanation:

not 100% hope > helped

7 0
3 years ago
The area of a rectangle is 20 cm². The height is 4 cm longer than thrice the width.
Ludmilka [50]

Answer:

width = 2 cm

Step-by-step explanation:

are of rectangle is equal to length times width

x is the width, then length is 3x + 4

so x(3x + 4) = 20

3x^2 + 4x = 20

3x^2 + 4x - 20 = 0

The formula to solve a quadratic equation of the form ax^2 + bx + c = 0 is equal to x = [-b +/-√(b^2 - 4ac)]/2a

so a = 3

    b = 4

    c = -20

substitute in the formula

x = [-4 +/-√(4^2 - 4(3)(-20))]/2(3)

x = [-4 +/- √(16 + 240)]/6

x = [-4 +/- 16]/6

x1 = (-4 + 16)/6 = 2

x2 = (-4 - 16)/6 = -20/6

since the width can't be a negative number, x2 is not the right answer

so x = 2

8 0
3 years ago
5.
stellarik [79]

Answer:

c.

Step-by-step explanation:

Move the constant to the right side and the sign

0.5x=26-6

Calculate

0.5x=26-6=20 >>> 0.5x=20

divide both sides of by the equation 0.5

0.5x=20 >>> x=40

4 0
4 years ago
Is −8>6 true or false
Helen [10]
False. Negative numbers aren’t greater than positive numbers. For it to be true it would have to be -8<6.
4 0
4 years ago
A student’s performance in Test 1 and Test 2 for all the 6 subjects has to be compared graphically for the current academic year
Debora [2.8K]

Answer:

Double Bar Graph

Step-by-step explanation:

A double bar graph would be suitable to show the performance of test 1 and 2 in all 6 subjects

3 0
3 years ago
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