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Firdavs [7]
3 years ago
8

What is the value of A and B (5x + b)(5x - b) = ax^2 - 49

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
6 0

Answer:

a=25

b=7

Step-by-step explanation:

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On his trip,Buddy drove 60 mph for 1 hour, 55 mph for 3 hours and 40 mph for 2 hours. What was the distance of Buddy trip?
sveticcg [70]

Answer:

Step-by-step explanation:

3 0
3 years ago
Y=35+x how I do solve for x
Mazyrski [523]

Try to put x on one side.

Do y       =       35+X

    -35            -35

Now you have Y-35=x

Hope this helped

5 0
3 years ago
Simplify.<br> 2 x (3-1) + 3<br> 07<br> 8<br> O 10<br> O 11
myrzilka [38]

Answer:

7

Step-by-step explanation:

2 x (3-1) + 3

Evaluate using PEMDAS

Parenthesis

Exponents

Math and Division ( left to right )

Addition and Subtraction ( left to right )

2 x (3-1) + 3

According to PEMDAS we do the operations inside of the parenthesis first

3 - 1 = 2

We now have: 2 x 2 + 3

Next we do exponents

There are no exponents so let's move on to multiplication and division

There is indeed multiplication so we do it

2 x 2 = 4

We now have: 4 + 3

Finally we do the addition

4 + 3 = 7

The answer is 7

4 0
3 years ago
Use the standard normal distribution or the​ t-distribution to construct a 99​% confidence interval for the population mean. Jus
vichka [17]

Answer:

(25.732,30.868)

Step-by-step explanation:

Given that in a random sample of 42 ​people, the mean body mass index​ (BMI) was 28.3 and the standard deviation was 6.09.

Since only sample std deviation is known we can use only t distribution

Std error = \frac{s}{\sqrt{n} } =\frac{6.09}{\sqrt{42} } \\=0.9397

df = 42-1 =41

t critical for 99% two tailed = 2.733

Margin of error= 2.733*0.9397=2.568

Confidence interval lower bound = 28.3-2.568=25.732

Upper bound = 28.3+2.568=30.868

3 0
3 years ago
Will give brainlest!Solve the triangle, Round answers to the nearest tenth.
tensa zangetsu [6.8K]

Answer:

C

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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