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3 years ago

Steven wants to keep track of how many miles he walks in a year. He expects to walk 5 miles per day, and he has

Mathematics

1 answer:

WINSTONCH [101]3 years ago

6 0

Answer:

The fourth choice.

Step-by-step explanation:

Because since 90 miles is basically counted as your first day, you do the number of days, n, minus 1 and then multiply it by 5 to find the number of miles walked after the first day. Then you add it to 90.

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4x^2+2xy-10y^2+9=0 what is the value of a,b,c and the discriminant?

zavuch27 [327]

basically you treat y like a number and not a variable

Answer:

a is 4

b is 2y

c is -10y²+9

discriminant is 4(41y²-36)

Step-by-step explanation:

4x²+2xy-10y²+9=0

rewrite in standard form of a quadratic equation like ax² + bx + c = 0

4x²+2yx-10y²+9=0

basically you treat y like a number and not a variable

a is the number with the x²

right away we know a is 4 because of 4x²

b is the one with x so in this formula b is 2y

c is the number without the x which in this case is -10y²+9

discriminant is

b² - 4ac

(2y)²- (4)(4)(-10y²+9)

4y²-(16)(-10y²+9)

4y²+160y²-144

164y²-144 =

4(41y²-36)

6 0

2 years ago

6) Allison is opening up a jewelry business. She spent $56 on supplies. After $77 in sales to customers,

liraira [26]

Answer:

1 she spent 133

2 12 yd

3 his sister is 79 meters below him

4 the temp raised by 33 degrees

5 she has 92$ in her bank account

Step-by-step explanation:

8 0

4 years ago

A grocer buys x kg of potatoes at Birr 1.50 per kg and y kg of onions at Birr 2.25 per kg.How much money does he pay in Birr?

inysia [295]

Answer:

a is the answer

Step-by-step explanation: i k n o w

4 0

3 years ago

The chair of the meeting collects $2702 from 28 people.Whats the unit rate?

SCORPION-xisa [38]

Answer:

$96.50

Step-by-step explanation:

5 0

3 years ago

Simplify the following surd expressions<br> a) 7/3 - 2/3 + V3 - 3V3

Nata [24]

Answer:

$\frac{7}{3}-\frac{2}{3}+\sqrt{3}-3\sqrt{3}=\frac{5}{3}-2\sqrt{3}$

Step-by-step explanation:

Given the expression

$\frac{7}{3}\:-\:\frac{2}{3}\:+\:v^3\:-\:3v^3$

solving the expression

$\frac{7}{3}\:-\:\frac{2}{3}\:+\:\sqrt{3}-3\sqrt{3}$

combine the fractions i.e $\frac{7}{3}-\frac{2}{3}=\frac{5}{3}$

$\frac{7}{3}\:-\:\frac{2}{3}\:+\:\sqrt{3}-3\sqrt{3}=\frac{5}{3}+\sqrt{3}-3\sqrt{3}$

add similar elements i.e $\sqrt{3}-3\sqrt{3}=-2\sqrt{3}$

$=\frac{5}{3}-2\sqrt{3}$

Thus,

$\frac{7}{3}-\frac{2}{3}+\sqrt{3}-3\sqrt{3}=\frac{5}{3}-2\sqrt{3}$

4 0

3 years ago