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4 years ago

What's the 7/9 - 4/7

Mathematics

1 answer:

Umnica [9.8K]4 years ago

7 0

Answer:

13/63

Step-by-step explanation:

7/9-4/7=49/63-36/63=13/63

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If c= the number of cars in a parking lot, which algebraic expressions represent the phrase below? 9 more than the number of car

Anestetic [448]

C + 9 because you are adding o mode cars and an expression doesn't have an equal sign (=)

5 0

4 years ago

Read 2 more answers

L 5.2.3 Quiz: Two-Variable Systems: Substitution

Misha Larkins [42]

Answer:

We get x=3 and y=21

The ordered pair will be: (3,21)

Step-by-step explanation:

We need to use the substitution method to solve the system of equations.

$y = 10x-9\\y = x + 18$

For substitution method we substitute the value of x or y from one equation to other.

Let:

$y = 10x-9--eq(1)\\y = x + 18--eq(2)$

Putting value of y from equation 2 into equation 1

$y=10x-9\\Put\:y=x+18\\x+18=10x-9\\x-10x=-9-18\\-9x=-27\\x=\frac{-27}{-9}\\x=3$

So, we get value of x=3

Now, for finding value of y, We substitute the value of x

Find value of x from equation 2

$y=x+18\\x=y-18$

Now, putting value of x in equation 1

$y=10x-9\\Put\:x=y-18\\y=10(y-18)-9\\y=10y-180-9\\y-10y=-189\\-9y=-189\\y=\frac{-189}{-9}\\y=21$

So, we get value of y=21

So, We get x=3 and y=21

The ordered pair will be: (3,21)

6 0

3 years ago

Write the value of the underlined digit 5.349

Furkat [3]

Answer is in the attachment below.

6 0

3 years ago

Sally begins hiking at an elevation of 224 ft then she descends 131 ft and climbs 67 feet higher than her current position she t

Temka [501]

Answer:

Sally ends at 3 feet below zero point.

Step-by-step explanation:

Let be $h$ the height with respect to zero point, which is represented by the following sum:

$h = \Sigma_{i=1}^{n} h_{i}$

Where:

$h_{i}$ - i-th travelled height, measured in feet.

In addition, positive sign means ascension, whereas negative sign means descent.

The statement can be translated into the following mathematical identity:

$h = h_{1}+h_{2}+h_{3}+h_{4}$

$h = 224\,ft+(-131\,ft)+67\,ft -163\,ft$

$h = -3\,ft$

Sally ends at 3 feet below zero point.

3 0

3 years ago

What is a less than -3?

docker41 [41]

-4
-5
-6
-7
-8
-9
-10
-11
etcetera

4 0

3 years ago