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3 years ago

Brianna had 20$ but spent d dollars on ice cream. Write an expression to represent how much Brianna has after buying ice cream

Mathematics

1 answer:

Georgia [21]3 years ago

3 0

Answer:

20-d=y

Step-by-step explanation:

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5x-2y=-6 3x-4y = -26

snow_tiger [21]

For this case we must solve the following system of equations:

$5x-2y = -6\\3x-4y = -26$

We multiply the first equation by -2:

$-10x + 4y = 12$

We add the new equation with the second one:

$-10x + 3x + 4y-4y = 12-26$

We have different signs subtracted and the sign of the major is placed:

$-7x = -14\\x = \frac {-14} {- 7}\\x = 2$

Now we find the value of the variable "y":

$3x-4y = -26\\3 (2) -4y = -26\\6-4y = -26\\-4y = -26-6\\-4y = -32\\y = \frac {-32} {- 4}\\y = 8$

Thus, the solution of the system is given by:

$(x, y) :( 2,8)$

Answer:

$(x, y) :( 2,8)$

3 0

3 years ago

You purchase a burrito for $8.39 and a juice for $2.25. You pay for both items with a $10 bill and a $5 bill. Complete a verbal

Mandarinka [93]

Answer:

You will get $4.36 back.

Step-by-step explanation:

You have to total the cost of the food and drink.

8.39 + 2.25 = 10.64

You give your total money to the cashier to pay for your goods.

10 + 5 = 15

The cashier will give you the refund or change back.

15 - 10.64 = 4.36

3 0

3 years ago

Anthony is 154 cm tall, his brother Gerry is 5/7 as tall as him. How tall is Gerry?

11111nata11111 [884]

The correct answer is 110 cm

Explanation:

Fractions always include two values (one at the top and the other at the bottom) and they represent the proportion of something, for example, 1/2 of an apple means there is only half apple. Now, to calculate how much is 5/7 of 154 centimeters, simply divide the total number into the denominator (bottom number) and then multiply the result by the numerator (top number). This process is shown in detail below:

$\frac{5}{7}$ - 5 is the numerator and 7 is the denominator

5/7 of 154 cm

154 cm / 7 = 22

22 x 5 = 110 cm

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3 years ago

Which expression uses the associative property to make it easier to evaluate 8(1\2 · 1\3)? HELP PLZZZZ

Usimov [2.4K]

Answer:

(8x1/2)1/3

Step-by-step explanation:

i took the quiz

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3 years ago

I need help fast!! ASAP I need help with this and that’s it!

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3 years ago

Brianna had 20$ but spent d dollars on ice cream. Write an expression to represent how much Brianna has after buying ice cream​

Brianna had 20$ but spent d dollars on ice cream. Write an expression to represent how much Brianna has after buying ice cream