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3 years ago

(2.5x-9)+6x=-7

Mathematics

2 answers:

eimsori [14]3 years ago

6 0

1. 32/17 or 1.88235
2. X= 1
3. X = -3
4. X = 10

Rzqust [24]3 years ago

3 0

Answer:

first one: x=0.23529411

second one: x=-1

3rd one: x=-3

4th one: x=10

Step-by-step explanation:

i hope this helped but i use (math. way.)

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Solve for x in the equation x2-12x+36=90

vazorg [7]

$x*2-12x+36=90

-10x+36=90

-10x+36-36=90-36

-10x=54

$
-10x/-10=54/-10
x=27/5
Hope this helps:)

4 0

2 years ago

What’s the algebraic expression for 8 squared

diamong [38]

Answer:

$8^2$

Step-by-step explanation:

Step 1: Convert words into an expression

What’s the algebraic expression for 8 squared

8 squared -> $8^2$

Answer: $8^2$

If needed, solve:

$8^2$

8 * 8

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2 years ago

Paco needs at least 3/8 yard of twine to build a model ship.how much twine could he buy

Stells [14]

Paco could buy 1/2 a yard, 5/8 yard, 3/4 yard, 7/8 yard, 1 yard, 1 1/8, so fourth since these fractions are all greater than 1.

4 0

2 years ago

A pool measures 100 meters by 100 meters. A toddler, inside the pool, throws a ball and it lands 60 centimeters from one edge of

allsm [11]

100 m = 10,000 cm thus 10,000 cm - 60 cm = 9,940 cm or 9.940 m

7 0

3 years ago

Evaluate each of the following to three significant figures, and express each answer in SI units using an appropriate prefix: (a

Softa [21]

Answer:

a). $4.86\times 10^{-15}$ m

b). $4.21\times 10^{-2}$ m³

c). $7.00\times 10^{3}$ N²

Step-by-step explanation:

In this question we have to convert each option into SI units.

a). $4.86(10^{-6})^{2}$ mm

= $4.86\times (10^{-12})\times (10^{-3} )$ m

= $4.86\times 10^{-15}$ m

b). (348 mm)³

= $(348)^{3}\times (10^{-3})^{3}$ m³

= $42144192\times 10^{-9}$ m³

= $4.21\times 10^{-2}$ m³

c). $(83700)^{2}\times (10^{-3})^{2}$ N²

= $700569\times 10^{4}\times 10^{-6}$ N²

= $7.00\times 10^{9}\times 10^{-6}N^{2}$

= $7.00\times 10^{3}$ N²

7 0

2 years ago