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3 years ago

X-3y=24 and 5x + 3y = -6 Solve by graphing

Mathematics

1 answer:

jonny [76]3 years ago

5 0

Answer:

Use photo math, it will give you the solution, steps and a graph

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The length of a rectangle is 18 centimeters less than five times it's width. It's area is 35 square centimeters. I need to find

Fiesta28 [93]

$\frac{(5x-18)(x)}{2} =35$
$(5x-18)(x)=70$
$5x^2-18x-70=0$
By the time you factorize this, you will get
x = 5.9521078984053 or <span>-2.3521078984053
</span>Please mark me as brainliest.

4 0

4 years ago

Researchers are planning a study to estimate the impact on crop yield when no-till is used in combination with residue retention

Greeley [361]

Answer: n= 14

Step-by-step explanation:

The formula to find the sample size :_

$n= p(1-p)(\dfrac{z^*}{E})^2$

, where p= Prior estimate of population proportion.

z* = Critical value.

E= Margin of error.

Given : Prior estimate of population proportion : p= 0.025

We know that , the critical value for 90% confidence interval :

$z^*=1.645$

E= 7.0%=0.070

Then , the required minimum sample size :

$n= (0.025)(1-0.025)(\dfrac{1.645}{0.07})^2\\\\=(0.025)(0.975)(23.5)^2\\\\13.46109375\approx14$

i.e. n= 14

Hence, the sample size needed : n= 14

8 0

3 years ago

What is .06 reapeting as a fraction plz

PtichkaEL [24]

Answer:

If it's 0.06 it's 3/50.but if it's 0.6 it's 3/5

6 0

3 years ago

Please answer, thank you. Image below.

vovikov84 [41]

Answer:

Top Image: 56°

Bottom Image: 134°

Step-by-step explanation:

I'm not sure which image you have a question on, so I'll just solve both.

Top Image:

We know that the sum of the angles will add up to 180 and that the angles of the triangle are f, f, and 68°. Therefore, we can set up the following equation:

f + f + 68° = 180°

Solving this gets f = 56°

Bottom Image:

We know that the sum of the angles will add up to 180 and that the angles of the triangle are 23°, 23°, and g. Therefore, we can set up the following equation:

23° + 23° + g = 180°

Solving this gets g = 134°

5 0

2 years ago

a diver dives from a 10m springboard. the equation f(t)=-4.9t^(2)+4t+10 models her height above the pool in seconds. what is her

Juliette [100K]

Answer:

4.975 meters

Step-by-step explanation:

$f(1.5)= -4.9(1.5)^2+4(1.5) + 10\\\\f(1.5) = -4.9(2.25) + 6 + 10\\\\f(1.5) = -11.025 + 6 + 10\\\\f(1.5) = -11.025 + 16 \\\\f(1.5) = 4.975$

4.975 meters

-Chetan K

8 0

3 years ago

X-3y=24 and 5x + 3y = -6 ￼ Solve by graphing

X-3y=24 and 5x + 3y = -6 Solve by graphing