cmmbutterflies cmmbutterflies

05-02-2020
Mathematics

contestada

How many gallons of a 50% antifreeze solution must be mixed with 70 gallons of 30% antifreeze to get a mixture that is 40% antifreeze?

Respuesta :

kenlingdad kenlingdad

05-02-2020

Answer:

70 gallons

Step-by-step explanation:

x gallon of 50%

x * 0.5 + 70 * 0.3 = (x + 70) * 0.4

0.5x + 21 = 0.4x + 28

0.1x = 7

x = 70

Answer Link

Otras preguntas

The force required to prevent the movement of water across a selectively permeable membrane is __________ pressure

Joseph decided to solve the quadratic x² +8x=9. Which of the following steps is where Joseph made his first mistake? x² +8x=9 Step 1 Step 2 Step 3 0000 x+8x-9=0

10 points please help and marked brainlyist

when will natural selction occur A. When there is competition B. When there are unlimited resources C. When there are no mutations in a species D. When the popu

Ddt was harmful to birds because it prevented them from laying eggs. please select the best answer from the choices provided t f

Select the correct answer. Consider this expression. x-4 2(x+4) For which product or quotient is this expression the simplest form? O A. B. O C. O D. 2x+8 x²16

Read the excerpt below from the poem “I Knew a Woman” by Theodore Roethke and answer the question that follows. Let seed be grass, and grass turn into hay: I’m

Khan Academy Question

Who provides implementation guidance for the information security program within the dod?.

Is Figure B a scale copy of Figure A?