3 years ago

Expand & simplify: (x - 5)(x + 2)

Mathematics

2 answers:

alexgriva [62]3 years ago

8 0

It’s 10 square two-3x-10

Serjik [45]3 years ago

7 0

Answer:

( x - 5 )( x + 2 )

= x² + 2x - 5x - 10

= x² - 3x - 10

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Hurry please

snow_lady [41]

Answer:

$1400

double is $2800

Step-by-step explanation:

$35,000 x .04 = $1400

if sales double, the commis soon will double so $1400 x 2 = $2800

7 0

3 years ago

Write this number in scientific notation. 33,200

Ivahew [28]

Answer:

104 = 10,000 x 3.32 = 33,200

Step-by-step explanation:

hope this helps

3 0

2 years ago

Read 2 more answers

Each week samantha can pay as much as $15 for her school lunch. Write an inequality showing how much samantha spends on lunch.

Annette [7]

Answer:

$x\leq \$15$

Step-by-step explanation:

Let

x------> amount of money that Samantha spends weekly on her school lunch

we know that

The inequality that represent this situation is

$x\leq \$15$

All positive real number less than or equal to 15

5 0

3 years ago

Find the slope of the line that passes through (3, 8) and (8, 5).

tino4ka555 [31]

Answer:

-⅗

Step-by-step explanation:

(5-8)/(8-3) = -3/5

8 0

3 years ago

If 2.22 moles of ammonia (NH3 ) decomposes according to the reaction shown, how many moles of hydrogen (H2 ) are formed? A. 1.11

egoroff_w [7]

Answer:

C. 3.33 moles

Step-by-step explanation:

Ammonia decomposes

$2NH_3\rightarrow N_2+3H_2$

We have to find the moles of hydrogen formed in 2.22 moles of ammonia.

From the reaction

2 moles of ammonia gives 3 moles of hydrogen

1 mole of ammonia produce hydrogen=3/2 moles

2.22 moles of ammonia produces hydrogen= $\frac{3}{2}\times 2.22$ moles

Number of moles of hydrogen formed by decomposition of 2.22 moles of ammonia

= $\frac{6.66}{2}=3.33$ moles

Hence, 3.33 moles of hydrogen are formed in 2.22 moles of ammonia.

Option C is true.

C. 3.33 moles

7 0

3 years ago