−8.58÷□=3.9 −3.2×□=24

Question
Factors and multiples
asked 2020-11-01
−8.58÷□=3.9
−3.2×□=24

Answers (1)

2020-11-02
c) A division fact of a÷b=c is equivalent to the division fact a÷c=b. Therefore −8.58÷□=3.9 is equivalent to the division fact −8.58÷3.9=□. Since −8.58÷3.9=−2.2, then −8.58÷−2.2=3.9.
d) A multiplication fact of a×b=ca×b=c is equivalent to the division fact b=c÷a. Therefore −3.2×□=24 is equivalent to the division fact □=24÷(−3.2)□. Since 24÷(−3.2)=−7.524÷(−3.2)=−7.5, then −3.2×−7.5=24.
0

Relevant Questions

asked 2021-03-05
explain what steps you would use to simplify 2+3 (9 - 5)
asked 2021-03-02
\frac{1}{3} ÷9
asked 2021-02-25
Zoe needs to buy beads to make jewelry. For each earring, Zoe uses 3 small blue beads, 1 small metallic bead, and 2 large green beads. What is the total number of beads Zoe will need to buy to make 8 pairs of earrings?
asked 2021-01-31
\(\displaystyle{2}^{{{3}}}\times{3}^{{{3}}}\)
asked 2021-01-08
We need to determine if \(x-5\) is a factor of \(2x^{3} - 4x^{2} - 7x - 10\)
asked 2020-11-12
Find the least common multiple of \(x^{3}-x^{2}+x-1\ and\ x^{2}-1\). Write the answer in factored form.
asked 2021-02-09
find the sum or the difference of 28.6-9.84
asked 2020-12-02
On her first three quizzes Jenna averaged 8 correct answers. On the next two quizzes she averaged 9 correct answers. What decimal number shows Jenna's average score on all five quizzes?
asked 2020-11-22
A scuba diver dove from the surface of the ocean to an elevation of \(\displaystyle−{79}{\frac{{{9}}}{{{10}}}}\) feet at a rate of - 18.8 feet per minute. After spending 12.75 minutes at that elevation, the diver ascended to an elevation of \(\displaystyle−{28}{\frac{{{9}}}{{{10}}}}\) feet. The total time for the dive so far was \(\displaystyle{19}{\frac{{{1}}}{{{8}}}}\). minutes. What was the rate of change in the diver's elevation during the ascent?
asked 2021-02-08
If the fourth multiple of 3 is subtracted from the third multiple of 4, what is the difference?
...