All categories

2 years ago

-6 by 7 + -3 by 8 solution i want please

Mathematics

1 answer:

gizmo_the_mogwai [7]2 years ago

3 0

$- 6 \times 7 + - 3 \times 8$

Remember the rule BOMDAS:

Brackets of

Multiplication

Division

Addition

Subtraction

Meaning we do the Multiplication First!

$(- 6 \times 7) + ( - 3 \times 8)$

Work the first equation

 $- 35 + - 24$ 

+- (you subtract)

 $- 35 - 24 = - 59$ 

You might be interested in

in a class of 30 students, 3 received a grade of an A. what fraction of the class did not receive an A? reduce to the lowest ter

ololo11 [35]

Answer:

1/10

Step-by-step explanation:

Hope this helps!

3 0

2 years ago

a list that contains the name the five anthropology students three sociology students in for psychology students. if one name is

lapo4ka [179]

Probability

There are:

5 anthropology students

3 sociology students

4 psychology students

5 + 3 + 4 = 12 students in total

The probability that one randomly selected student is for anthropology is:

$p=\frac{5}{12}$

Note we have divided the number of favorable cases by the total cases

3 0

9 months ago

A triangle has sides with lengths of 10 cm 6 cm and 8cm is it a right triangle

Artyom0805 [142]

Answer:

Yes!

Step-by-step explanation:

6: 8: 10, makes a ratio of 3: 4: 5, making a right triangle

6 0

3 years ago

Larry Mitchell invested part of gis 35,000 advance at 3% annual simple interest and the rest at 2% annual simple interest. If hi

Rom4ik [11]

Answer:

He invested $20000 for 3% rate and $15000 for 2% rate.

Step-by-step explanation:.

Let the 3% rate be for Account A and the 2% rate for Account B.

From the question, we know that the Principal from both accounts must add up to $35000

$P_A + P_B =$ 35000 ________________________ (1)

We also know that the interest from both accounts add up to $900

$I_A + I_B = $900$ ________________________(2)

The Interest from Account A (R = 3%, T = 1) is:

$I_A = \frac{P_A *R*T}{100}$

This implies that:

$I_A = \frac{P_A *3*1}{100}\\\\\\I_A = \frac{3P_A}{100} \\\\\\100*I_A = 3P_A\\\\\\100I_A - 3P_A = 0$ ________________________(3)

The Interest from Account B (R = 2%, T = 1) is:

$I_B = \frac{P_B *R*T}{100}$

This implies that:

$I_B = \frac{P_B *2*1}{100}\\\\\\I_B = \frac{2P_B}{100} \\\\\\100*I_B = 2P_B\\\\\\100I_B - 2P_B = 0$ _____________________________(4)

From (1),

$P_B = 35000 - P_A$

Putting this in (4)

$100I_B - 2*(35000 - P_A) = 0\\\\100I_B -70000 + 2P_A = 0\\\\100I_B +2P_A = 70000$ ________________(5)

From (2):

$I_A = 900 - I_B$

Putting this in (3):

$100(900 - I_B) - 3P_A = 0\\\\90000 - 100I_B - 3P_A = 0\\\\100I_B +3P_A = 90000$ _______________________(6)

(5) and (6) are simultaneous equations, hence, we can solve them:

$100I_B +3P_A = 90000\\\\100I_B + 2P_A = 70000$

Subtracting (5) from (6):

$3P_A - 2P_A = 90000 - 70000$

$P_A =$ $20000

Hence:

$P_B = 35000 - 20000\\\\$

$P_B =$ $15000

Also:

$100I_B + 3P_A = 90000\\\\100I_B + (3 * 20000) = 90000\\\\100I_B + 60000 = 90000\\\\\\100I_B = 90000 - 60000\\\\100I_B = 30000$

$I_B = 3000/100$ = $300

Hence:

$I_A = 900 - 300\\\\$

$I_A =$ $600

Hence, Larry invested $20000 at 3% annual interest and got $600 interest. He also invested $15000 at 2% annual interest and got $300.

5 0

3 years ago

A ferris wheel has a circumference of 119.32 yds. a) What is the diameter of this ferris wheel? and b) What is the radius of thi

aleksandr82 [10.1K]

Answer:

a) 38

b) 19

Step-by-step explanation:

2πr = 119.32

2(3.14)r = 119.32

6.28r = 119.32

r = 119.32 / 6.28

r = 19

diameter = 2r = 2(19) = 38

3 0

2 years ago

-6 by 7 + -3 by 8 solution i want please​

-6 by 7 + -3 by 8 solution i want please