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3 years ago

File attached Will give brainliest

Mathematics

2 answers:

Strike441 [17]3 years ago

5 0

Answer: 385 cm

Step-by-step explanation: 7x5 = 35 multiply 35 with the 11 that equals 385

nlexa [21]3 years ago

4 0

Answer:

100662323 step by step

Step-by-step explanation:

You might be interested in

How do you find the square root of a negative number? Explain the process

IrinaK [193]

Answer:

A. $\sqrt{-64}$ = 8i

B. 8i + 5i = 13i

C. 8i - 5i = 3i

D. 8i x 5i = -40

Step-by-step explanation:

A. The square root of any negative number would lead to a complex number. Complex numbers are number which consist a complex part denoted by i.

-1 = $i^{2}$

$\sqrt{-1}$ = $\sqrt{i^{2} }$ = i

Example: 1. What is the square root of -64?

square root of -64 = $\sqrt{-64}$

= $\sqrt{-1 *64}$

= $\sqrt{-1}$ x $\sqrt{64}$

= i x 8

= 8i

$\sqrt{-64}$ = 8i

2. find the square root of -25.

$\sqrt{-25}$ = $\sqrt{-1*25}$

= 5i

B. To add two complex numbers, they are considered as algebraic expressions.

Example, the sum of 8i and 5i can be determined as;

8i + 5i = 13i

C. To add two complex numbers, they are considered as algebraic expressions.

Example, the subtraction of 8i and 5i can be determined as;

8i - 5i = 3i

D. To multiply two complex numbers, the complex part is considered.

Example, determine the product of 8i and 5i.

8i x 5i = 8 x 5 x i x i

= 40 $i^{2}$

= -40 (∵ $i^{2}$ = -1)

8i x 5i = -40

6 0

4 years ago

A biologist is studying the growth of a particular species of algae. She writes the following equation to show the radius of the

Lelu [443]

Answer:

The reasonable domain to plot the growth function is the interval [0,9]

$0\ days\leq d\leq 9\ days$

Step-by-step explanation:

In this problem we have a exponential function of the form

$f(d)=a(b^d)$

where

f(d) is the radius of the algae in mm

d is the number of days

a is the initial value or y-intercept

b is the base

r is the rate of growth

b=1+r

we have

$a=9\ mm\\b=1.04\\r=1.04-1=0.04=4\%$

we have

$f(d)=9(1.04^d)$

For f(d)=12.81 mm

substitute in the function and solve for d

$12.81=9(1.04^d)$

$(12.81/9)=(1.04^d)$

Apply log both sides

$log(12.81/9)=log(1.04^d)$

$log(12.81/9)=(d)log(1.04)$

$d=log(12.81/9)/log(1.04)$

$d=9\ days$

therefore

The reasonable domain to plot the growth function is the interval [0,9]

$0\ days\leq d\leq 9\ days$

4 0

4 years ago

Item 1<br> Find the dimensions of the square.<br><br> Area = 441 cm²

mafiozo [28]

Answer:

21 cm by 21 cm

Step-by-step explanation:

The formula for the area of a square is A = x^2, where x is the length of any one side of the square. Here,

441 cm² = x²

This actually has two roots: {√441, -√441), but since x must be positive here, to be a dimension of the square, we choose +√441, or +21.

The dimensions of the square are 21 cm by 21 cm.

3 0

3 years ago

Please answer ASAP will give brainliest

netineya [11]

1. - 2,5(1-2n)-1,5n= - 2,5+5n-1,5n= - 2,5+3,5n
2.no
3.yes
4.no

5 0

3 years ago

john has 7f five dollar bills. he wants to buy a baseball bat that costs $38. A.how much money does he have? B. does he have eno

elena55 [62]

A. 7 times 5 equals $35

B.No he does not have enough money because he only has $35 and he needs $3 more.

5 0

3 years ago