3 years ago

Solve the system of equations by the substitution method.

Mathematics

1 answer:

masya89 [10]3 years ago

6 0

Answer:

whichever one corresponds with the answers you have will be right.

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Solve the following equations <br> 5^2x-2(5^x)-15=0

castortr0y [4]

Answer:

x = 1

Step-by-step explanation:

${5}^{2x} - 2( {5}^{x} ) - 15 = 0$

$( {5}^{x} {)}^{2} - 2 \times {5}^{x} - 15 = 0$

${t}^{2} - 2t - 15 = 0$

${5}^{x} t = - 3 \: \: .5$

${5}^{x} = 5$

$x = 1$

5 0

3 years ago

Please help me with this I need this done!!!

mote1985 [20]

Answer:

1=1

2=4

3= <NTR=115

<RTM=45

<STN=45

4= A-124

B-45

C-45

D-90

E-124

5=15

6=?

Step-by-step explanation:

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8 0

3 years ago

Find the measure of x.

Scorpion4ik [409]

Answer:

x = 6

Step-by-step explanation:

use alternate angles

5 0

3 years ago

Ajay bought a fan and a heater for rs 4000. He sold the fan at a profit of a 25% and the heater at a loss of 5%. If he gained 7%

Alborosie

Answer: Heater -Rs 2400; Fan- Rs 1600

Step-by-step explanation:

Given

Ajay bought a fan and a heater for Rs 4000

Suppose the price of fan is x and that of heater is 4000-x

Profit on the fan is $0.25x$

Loss on heater is $0.05\times (4000-x)$

Total profit is 7% i.e. $0.07\times 4000$

$\therefore 0.07\times 4000=0.25x-0.05(4000-x)\\\Rightarrow 280=0.25x-200+0.05x\\\Rightarrow 480=0.3x\\\Rightarrow x=1600$

Thus, the price of heater is $4000-1600=Rs.\ 2400$

Price of fan is $Rs.\ 1600$

Price of heater is $Rs.\ 2400$

8 0

3 years ago

Solve : 2⁴ <br>I need to show work

lukranit [14]

Answer:

Step-by-step explanation:

2 to the power 4

2 × 2 × 2 × 2 = 4 × 2 × 2 = 8 × 2 = 16

6 0

3 years ago

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