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3 years ago

Subtract 5x - 2 from 7x - 6

Mathematics

2 answers:

lukranit [14]3 years ago

5 0

Answer:

-32

Step-by-step explanation:

Step2247 [10]3 years ago

3 0

Answer:

-32

Step-by-step explanation:

(7x(6))-(5x(-2))=-32

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Please answer this question thanks

Nimfa-mama [501]

${x}^{2} - x - \frac{3}{4} = 0 \\ 4{x}^{2} - 4x - 3 = 0 \\ 4 {x}^{2} - (6x - 2x) - 3 = 0 \\ (4 {x}^{2} - 6x) + (2x - 3) = 0 \\ 2x(2x - 3) + 1(2x - 3) = 0 \\ (2x + 1)(2x - 3) = 0 \\ \\ x = \frac{ - 1}{2} \: and \: \frac{3}{2}$

Hope This Will Help You

6 0

3 years ago

Multiply. Write your answer as a fraction in simplest form.<br> 8x 3/26

ankoles [38]

Answer:

12/13

Step-by-step explanation:

Multiply 8 with the numerator

8 * 3/26 = 24/26

Simplify

12/13

Hope this helps :)

7 0

3 years ago

Read 2 more answers

A tank holds 300 gallons of water and 100 pounds of salt. A saline solution with concentration 1 lb salt/gal is added at a rate

Shkiper50 [21]

The amount of salt in the tank changes with rate according to

$Q'(t)=\left(1\dfrac{\rm lb}{\rm gal}\right)\left(4\dfrac{\rm gal}{\rm min}\right)-\left(\dfrac{Q(t)}{300+(4-1)t}\dfrac{\rm lb}{\rm gal}\right)\left(1\dfrac{\rm gal}{\rm min}\right)$

$\implies Q'+\dfrac Q{300+3t}=4$

which is a linear ODE in $Q(t)$ . Multiplying both sides by $(300+3t)^{1/3}$ gives

$(300+3t)^{1/3}Q'+(300+3t)^{-2/3}Q=4(300+3t)^{1/3}$

so that the left side condenses into the derivative of a product,

$\big((300+3t)^{1/3}Q\big)'=4(300+3t)^{1/3}$

Integrate both sides and solve for $Q(t)$ to get

$(300+3t)^{1/3}Q=(300+3t)^{4/3}+C$

$\implies Q(t)=300+3t+C(300+3t)^{-1/3}$

Given that $Q(0)=100$ , we find

$100=300+C\cdot300^{-1/3}\implies C=-200\cdot300^{1/3}$

and we get the particular solution

$Q(t)=300+3t-200\cdot300^{1/3}(300+3t)^{-1/3}$

$\boxed{Q(t)=300+3t-2\cdot100^{4/3}(100+t)^{-1/3}}$

5 0

3 years ago

The ratio of the ages of Mandy and Sandy is 2:5. After 8 years, their ages will be in the ratio 1:2. What is the difference betw

swat32

A ratio shows us the number of times a number contains another number. Caitlin is right.

<h3>What is a Ratio?</h3>

A ratio shows us the number of times a number contains another number.

The ratio of the ages of Mandy and Sandy is 2:5. Therefore, the ratio will be,

M/S = 2/5

M = 2S/5

After 8 years, their ages will be in the ratio 1:2, therefore,

(M+8)/(S+8) = 1/2

2M + 16 = S + 8

2M - S = -16 + 8

Substitute the value of M,

2(2S/5) - S = -8

-0.2S = -8

S = 40

Now, if we substitute the value of S in the first ratio,

M/S = 2/5

M/40 = 2/5

M = 16

Now, if we take the difference in their ages the difference will be 24(40-16).

Since the difference is 24, we can conclude that Caitlin is right.

Hence, Caitlin is right.

Learn more about Ratios:

brainly.com/question/1504221

#SPJ1

4 0

2 years ago

The Joneses are moving from San Francisco to South Africa. They pack their belongings in rectangular crates and hire a boxcar to

Alex Ar [27]

La sup della base del box e' :
S box=60 x10=600
S crate =15 x5=75
Sulla base del box si possono mettere 600/75=8 crate
Sull' altezza (high) si possono mettere 13/6,5=2 strati
8( crate/ strato) x 2 (strati)=16 crates

7 0

3 years ago

Read 2 more answers