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Snowcat [4.5K]
2 years ago
13

4y2 - 2x + 7 + 2y for x = 7 and y =2.

Mathematics
1 answer:
Lemur [1.5K]2 years ago
3 0

Answer:

Step-by-step explanation:

4y2 - 2x + 7 + 2y for x = 7 and y =2.

= 4(2)^2 -2(7) +7 + 2(2)

= 4(4) - 14 +7 + 4

= 16 - 14 + 7 + 4

= 13

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The distance between points (5,9) and (-7,-7)
ankoles [38]
You need to find the change in x and y 

change in x = 12 
change in y = 16 

to find the distance you use a^2+ b^2 = c^2
or in this case x^2 + y^2 = d^2

144+256 = 400 

\sqrt{400}

=20 
so distance equals 20


I hope this helps!
4 0
2 years ago
How many odd numbers with 4 different digits, can be formed using the digits 1, 2, 3, 4, 5, 6, 7, 8? (No repetition is allowed)
olga55 [171]

Answer:

840 ( D )

Step-by-step explanation:

GIVEN DIGITS : 1,2,3,4,5,6,7,8  

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therefore the number of odd numbers with 4 different digits can be formed by the same way the number of even numbers ( without repetition )

Hence the number of ways odd numbers with 4 different digits = Total number of ways of forming 4 digit numbers / 2

8*7*6*5 = 1680 / 2 =  840 ways

6 0
3 years ago
32. The expression a^x means that a is to be used as a factor x times. Therefore, if a^x is squared, the result is
dybincka [34]

Answer:

B. a^2x

Step-by-step explanation:

squaring a^x gives. (a^x)²

by applying the rules of indices, ^2 multiplies x therefore making it a^2x

3 0
2 years ago
The scale on the map is 1 cm to 10 km. The distance from Clevend to Cincinnati is 40cm. The scale on the second map is 1 cm to 5
navik [9.2K]
1cm *10 = 10km
40cm * 10 = 400 km

50km/50 = 1cm
400km/50 = 8cm

A: 8cm
7 0
3 years ago
A triangle has a base of 4 inches and a high of 6 inches
Finger [1]

Answer:

B

Step-by-step explanation:

The area (A) of a triangle is calculated using the formula

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here b = 4 and h = 6, thus

A = \frac{1}{2} × 4 × 6 = 2 × 6 = 12 in² → B

5 0
2 years ago
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