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wariber [46]
3 years ago
7

What number must be added to the expression below to complete the square? x2 - 11x

Mathematics
2 answers:
mart [117]3 years ago
5 0

Since we are to complete the square, therefore I believe the correct given should be:

x ^ 2 – 11 x

Take note of the symbol ^ which denotes that 2 is an exponent of x.

The general form of a binomial equation is in the form of:

a x^2 + b x + c

Where in this case:

a = 1

b = -11

c = unknown

To complete the square, we have to find for the value of c. This is calculated using the formula:

c = (b / 2) ^ 2

c = (-11 / 2) ^ 2

c = 30.25

Therefore the complete equation is:

<span>x ^ 2 – 11 x + 30.25</span>

Contact [7]3 years ago
4 0

30.25 is correct but apex asks for a fraction so 121/4

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Answer:

85in²

Step-by-step explanation:

s = side

triangle: ((b x h) ÷ 2) x 4

((5 x 6) ÷ 2) x 4 = 60in

square: s2(squared not 2)

5² = 25

total sa: 25 + 60 = 85in²

5 0
3 years ago
Here are the dimensions of the oven tray Jenny bakes the cakes on. Each cake tin is 25 cm in diameter. How many cake tins can Je
goldenfox [79]
Dimensions please? Hahaha :')
6 0
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Lynn works as a part-time vendor selling necklaces for $15 each and bangles for $10 each. She needs to earn a minimum of $300 pe
timofeeve [1]

A,B,C,D i.e. all statements are true!

<u>Step-by-step explanation:</u>

According to question, Lynn works as a part-time vendor selling necklaces for $15 each and bangles for $10 each. She needs to earn a minimum of $300 per week to cover her expenses. The inequality for above scenario will be :

15x + 10y\geq 300 where, x is number of necklaces & y is number of bangles.

A.

Lynn will meet her goal if she sells 12 bangles and 12 necklaces. i.e. x=12 and y=12 , putting values inequality : 15(12) + 10(12)  = 300 which follows inequality . True statement!

B.

Lynn will meet her goal if she sells 20 bangles and 6 necklaces.

putting values inequality : 15(6) + 10(20) = 290 which follows inequality . True statement!

C.

Lynn will meet her goal if she sells 6 bangles and 12 necklaces. putting values inequality : 15(12) + 10(6) = 240, which follows inequality . True statement!

D.

Lynn will meet her goal if she sells 2 bangles and 18 necklaces.putting values inequality : 15(18) + 10(2)=290, which follows inequality . True statement!

7 0
3 years ago
Read 2 more answers
Jean loves to go bird watching. One day, she saw 7 birds.The next day, she
Ludmilka [50]

Answer:

Jaw saw an average of 6 birds each day

Step-by-step explanation:

Given: One day, Jean saw 7 birds. The next day, she  saw 11 birds. The next day, she saw no birds.

To find: average number  of birds Jean saw each day

Solution:

Average is a central value of a set of terms.

Average of terms x_1,x_2,x_3,...,x_n is given by \frac{x_1+x_2+x_3+...+x_n}{n}

Number of birds, Jean saw on day one (x_1) = 7

Number of birds, Jean saw on the second one (x_2)  = 7

Number of birds, Jean saw on the third one (x_3) = 7

So,

average number  of birds Jean saw each day = \frac{x_1+x_2+x_3}{3} =\frac{7+11+0}{3}=\frac{18}{3}=6

Therefore,

Jaw saw an average of 6 birds each day

6 0
3 years ago
The one I’m pointing to
sveticcg [70]

Answer: hope that helps

Step-by-step explanation: 128 divided by 640 x 100 = 20%

4 0
3 years ago
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