Answer:
-x+4, 4+-x
Step-by-step explanation:
Obtain these answers by moving the X and 4 around and multiplying the equation by -1
Answer:
2.1
Step-by-step explanation:
6.3 + 5.8(4 − 3.5(2)) + 6.6(2)
6.3+5.8(4−7)+(6.6)(2)
6.3+(5.8)(−3)+(6.6)(2)
6.3+−17.4+(6.6)(2)
-11.1+(6.6)(2)
−11.1+13.2
2.1
Answer:
In afternoon it was -2 degree cold. At night it went 5 time colder. How cold was it at night?
Step-by-step explanation:
Hawick is 15 kilometers south of Abbotsford, and Kelso is 17 kilometers east of Abbotsford. What is the distance from Hawick to Kelso? Round your answer to the nearest tenth of a km.
Answer:
22.7 km
Step-by-step explanation:
The shape formed by this problem is a right triangle which is attached.
We apply Pythagoras Theorem
![x^2=17^2+15^2\\x^2=514\\x=22.7\: km](https://tex.z-dn.net/?f=x%5E2%3D17%5E2%2B15%5E2%5C%5Cx%5E2%3D514%5C%5Cx%3D22.7%5C%3A%20km)
The distance from Hawick to Kelso is 22.7 km (to the nearest tenth of a km)
Answer:
13/20
Step-by-step explanation:
The fractions have unlike denominators. First, find the Least Common Denominator and rewrite the fractions with the common denominator.
Multiply both the numerator and denominator of each fraction by the number that makes its denominator equal the LCD. This is basically multiplying each fraction by 1.
(2/5×4/4)+(1/4×5/5)=?
Complete the multiplication and the equation becomes
8/20+5/20=?
The two fractions now have like denominators so you can add the numerators.
Then:
8+5/20=13/20
13/20 cannot be reduced, therefore 2/5 + 1/4 = 13/20