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Lilit [14]
3 years ago
10

NINTH GRADE ALGEBRA HOMEWORK PLEASE HELP ASAP!!

Mathematics
1 answer:
Hitman42 [59]3 years ago
8 0

(2x + 4)(x - 3) = 0 \\ 2x + 4 = 0 >  > x =  - 2 \\ x - 3 = 0 >  > x = 3
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A factory makes an oil mixture by mixing oils of grades A and B as follows. For every 2.3 liters of grade A oil, 1.2 liters of g
lozanna [386]
<span>To produce 1000L of mixture the factory will need 657 liters of grade A and 343 liters of grade B. To determine this you have to figure out the percentage of each grade in the mixture. The ratio is 2.3 liters to 1.2 liters. Therefor in this scenario the unit equaling 100% is 3.5 liters. To find the percentage of grade A you divide the amount used by the total amount of the unit 100%: 2.3 divided by 3.5 = .657 (multiply the answer by 100 to get 65.7%). To find the percentage of grade B you divide the amount used by the total amount of the unit 100%: 1.2 divided by 3.5 = .343 (multiply the answer by 100 to get 34.3%) To test your answer make sure both percentages add up to 100%: 65.75 plus 34.35 = 100% To determine how much of grade A and grade B is needed for a set amount of liters you multiply the percentage by the liters needed. For this situation you multiply 65.7% (when multiplying percentages you need to multiply in decimal form). For grade A you multiply .657 (65.7%) by 1000 liters = 657 liters For grade B you multiply .343 (34.3%) by 1000 liters = 343 liters To test your answer you can use the same addition as you did to test the percentages: 657 liters plus 343 liters = 1000 liters</span>
4 0
3 years ago
Read 2 more answers
Given: LP=NP<br> ML=MN<br> Prove: LQ=QN
julsineya [31]

Answer:

The Proof is below.

Step-by-step explanation:

Given:

\overline {LP} \cong \overline{NP}

\overline {ML} \cong \overline{MN}

To Prove:

\overline {LQ} \cong \overline{QN}

Proof:

In  ΔLPM  and ΔNPM  

\overline {LP} \cong \overline{NP}  ……….{Given}

\overline {ML} \cong \overline{MN}  ……….{Given}

\overline {LP} \cong \overline{NP}  ……….{Reflexive Property}

ΔLPM ≅ ΔNPM      ….{ By Side-Side-Side congruence test}

∴ ∠LMP ≅ ∠NMP  ...{Corresponding parts of congruent triangles (c.p.c.t).}.....( 1 )

Now In ΔLMQ  and ΔNMQ  

\overline {ML} \cong \overline{MN}  ……….{Given}

∠LMQ ≅ ∠NMQ                                 ..........{From 1 above}

\overline {MQ} \cong \overline{MQ}  ……….{Reflexive Property}

ΔLMQ ≅ ΔNMQ         ....{ By Side-Angle-Side Congruence test}

∴ \overline {LQ} \cong \overline{QN} ...{Corresponding parts of congruent triangles (c.p.c.t).}.....Proved

4 0
3 years ago
Which pair of ratios forms a proportion?
Murrr4er [49]

Answer:

6/7 and 48/56

Step-by-step explanation:

6x8=48

7x8=56

4 0
3 years ago
Read 2 more answers
Geometry Work Help Please
Scilla [17]

Answer:

O

Step-by-step explanation:

7 0
3 years ago
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56 + 41 = 30 + <br> A 57<br> B 67<br> C 77<br> D 87
aksik [14]
The answer is B
Comment for an explanation
I HOPE THIS HELPS :)
3 0
3 years ago
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