If the following systerm of equations was written as a matrix equation in the

A=[a c]

[b d]

form AX = C and matrix A was expressed in the form, find the value of a-b+c+d

2x + 8y=7

4x - 2y = 9

LeeAnn wants to organize her data from researching the effect of hours of sunlight on plant growth to see if there is a trend in the data.

Lucinda wants to make $6.00 on every arrangement of flowers she sells. If it costs her $10.00 to prepare an arrangement, by what percentage will she mark up the price? a. 60% b. 70% c. 59% d. 167%

Clabber company has bonds outstanding with a par value of $100,000 and a carrying value of $97,300. if the company calls these bonds at a price of $95,000, the gain or loss on retirement is

5x + y2 What is the value of the expression above when x = 3 and y = 2? You must show all work and calculations to receive full credit.

The trigonometric ratios sine and secant are reciprocals of each other true or false?

What is the value of x in the following equation? X/29=0.04

After selling some lemonade and cookies, Vivian and her brother Gil had 7-one dollar bills, 8 quarters and 6 dimes. They agreed to divide the money equally. What is the total amount of money that Vivian and Gil earned? Explain.

A rectangle has an area of 40cm. the dimensions of the rectangle are multiplied to form a new rectangle with an area of 160cm. by what number were the dimensions multiplied?

Evan deposits $500 in a savings account that earns interest. Let f (t) = 500 and g (t) = 1.05t, where t represents the time, in years, since the account was opened.

Class 10R sat a test The mean marks for the calls was 70% There are 30 students 29 of them are boys. The mean mark for the boys in the test was 62%. Work out the mean mark for the girls